---
title: Replace experiment protocol
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: Docs > API Reference > Experiments
---

> For the complete documentation index, see [llms.txt](https://docs.datadoghq.com/llms.txt).

{% callout %}
# Important note for users on the following Datadog sites: app.ddog-gov.com, us2.ddog-gov.com

{% alert level="danger" %}
This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site.md). ({% placeholder "user-datadog-site-name" /%}).
{% /alert %}

{% /callout %}

# Replace experiment protocol{% #replace-experiment-protocol %}

{% tab title="v2" %}

| Datadog site      | API endpoint                                                                 |
| ----------------- | ---------------------------------------------------------------------------- |
| ap1.datadoghq.com | PUT https://api.ap1.datadoghq.com/api/v2/experiments/protocols/{protocol_id} |
| ap2.datadoghq.com | PUT https://api.ap2.datadoghq.com/api/v2/experiments/protocols/{protocol_id} |
| app.datadoghq.eu  | PUT https://api.datadoghq.eu/api/v2/experiments/protocols/{protocol_id}      |
| app.ddog-gov.com  | PUT https://api.ddog-gov.com/api/v2/experiments/protocols/{protocol_id}      |
| us2.ddog-gov.com  | PUT https://api.us2.ddog-gov.com/api/v2/experiments/protocols/{protocol_id}  |
| uk1.datadoghq.com | PUT https://api.uk1.datadoghq.com/api/v2/experiments/protocols/{protocol_id} |
| app.datadoghq.com | PUT https://api.datadoghq.com/api/v2/experiments/protocols/{protocol_id}     |
| us3.datadoghq.com | PUT https://api.us3.datadoghq.com/api/v2/experiments/protocols/{protocol_id} |
| us5.datadoghq.com | PUT https://api.us5.datadoghq.com/api/v2/experiments/protocols/{protocol_id} |

### Overview



Replace the template of a published protocol. Draft and archived protocols return 409. Send subject_type_id, all four required boolean settings, and metric_groups. Omitted optional template fields are cleared. Omitted enforcement keeps the existing locks.

Use primary_metric_id to select the primary metric. Use default_duration_days to set target_duration_days on experiments created from the protocol. The nested metric is_primary and analysis_plan.target_duration_days fields are rejected. An unchanged GET response can be sent as the request body. Response-only fields are ignored.

Independent configuration errors are returned together in the JSON:API errors array. Each error identifies the field in source.pointer. Earlier request and reference checks can stop on the first error. A failed request leaves the protocol unchanged. Changes apply to future experiments; existing experiments keep their settings.
This endpoint requires the `product_analytics_experiments_write` permission.
OAuth apps require the `product_analytics_experiments_write` authorization [scope](https://docs.datadoghq.com/api/latest/scopes.md#experiments) to access this endpoint.



### Arguments

#### Path Parameters

| Name                          | Type   | Description               |
| ----------------------------- | ------ | ------------------------- |
| protocol_id [*required*] | string | The UUID of the protocol. |

#### Query Strings

| Name                | Type   | Description                                                                                                                                                               |
| ------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| expected_updated_at | string | The updated_at value from the last read. Include the full timestamp, with fractional seconds. Returns 409 if another write changed the protocol. Omit to skip this check. |

### Request

#### Body Data (required)



{% tab title="Model" %}

| Parent field                         | Field                                             | Type     | Description                                                                                                                                                                                                                     |
| ------------------------------------ | ------------------------------------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|                                      | data [*required*]                            | object   | JSON:API protocol request resource.                                                                                                                                                                                             |
| data                                 | attributes [*required*]                      | object   | Replace a published protocol template. Omitted optional template fields are cleared. Omitted enforcement and migration_metadata are preserved. Enabled limits require their values; allocation settings require environment_id. |
| attributes                           | analysis_plan                                     | object   | Statistical settings. Use `default_duration_days` for duration; `target_duration_days` is not accepted here.                                                                                                                    |
| analysis_plan                        | compute_cuped                                     | boolean  | Whether to use pre-experiment data to reduce variance with CUPED.                                                                                                                                                               |
| analysis_plan                        | confidence_interval_method                        | string   | Confidence interval method: `Sequential`, `FixedSample`, `Bayesian`, or `SequentialFixedHybrid`. An empty string leaves the method unset.                                                                                       |
| analysis_plan                        | confidence_level                                  | double   | Confidence level used by the statistical analysis.                                                                                                                                                                              |
| analysis_plan                        | multiple_testing_correction_method                | string   | Method used to adjust for testing multiple metrics.                                                                                                                                                                             |
| attributes                           | assignment_source_default_properties              | [object] | Assignment properties.                                                                                                                                                                                                          |
| assignment_source_default_properties | column_name                                       | string   | Source column that supplies this assignment property.                                                                                                                                                                           |
| assignment_source_default_properties | column_type                                       | string   | Data type of the source column.                                                                                                                                                                                                 |
| assignment_source_default_properties | name                                              | string   | Display name of the assignment source property.                                                                                                                                                                                 |
| attributes                           | assignment_source_id                              | uuid     | ID of the assignment source selected by the protocol.                                                                                                                                                                           |
| attributes                           | default_duration_days                             | int64    | Default experiment duration supplied by the protocol, in days.                                                                                                                                                                  |
| attributes                           | enforcement                                       | object   | Complete lock map. Omit this object to preserve current locks. Null is rejected; every field is required.                                                                                                                       |
| enforcement                          | confidence_interval_method [*required*]      | string   | Always LOCKED. The server keeps this setting locked regardless of the supplied value.                                                                                                                                           |
| enforcement                          | confidence_level [*required*]                | string   | LOCKED prevents changes to confidence level. EDITABLE permits changes.                                                                                                                                                          |
| enforcement                          | cuped_calculation [*required*]               | string   | LOCKED prevents changes to CUPED variance reduction. EDITABLE permits changes.                                                                                                                                                  |
| enforcement                          | default_duration [*required*]                | string   | LOCKED prevents changes to default duration. EDITABLE permits changes.                                                                                                                                                          |
| enforcement                          | environment [*required*]                     | string   | LOCKED prevents changes to environment. EDITABLE permits changes.                                                                                                                                                               |
| enforcement                          | flag_source [*required*]                     | string   | Always LOCKED. The server keeps this setting locked regardless of the supplied value.                                                                                                                                           |
| enforcement                          | multiple_testing_correction [*required*]     | string   | LOCKED prevents changes to multiple testing correction. EDITABLE permits changes.                                                                                                                                               |
| enforcement                          | notifications [*required*]                   | string   | LOCKED prevents changes to notifications. EDITABLE permits changes.                                                                                                                                                             |
| enforcement                          | primary_metric [*required*]                  | string   | LOCKED prevents changes to primary metric. EDITABLE permits changes.                                                                                                                                                            |
| enforcement                          | secondary_metrics [*required*]               | string   | LOCKED prevents changes to secondary metrics. EDITABLE permits changes.                                                                                                                                                         |
| enforcement                          | split_by_exploration_dimensions [*required*] | string   | LOCKED prevents changes to result exploration dimensions. EDITABLE permits changes.                                                                                                                                             |
| enforcement                          | subject_type [*required*]                    | string   | Always LOCKED. The server keeps this setting locked regardless of the supplied value.                                                                                                                                           |
| enforcement                          | targeting_rules [*required*]                 | string   | LOCKED prevents changes to targeting rules. EDITABLE permits changes.                                                                                                                                                           |
| enforcement                          | traffic_exposure [*required*]                | string   | LOCKED prevents changes to traffic exposure. EDITABLE permits changes.                                                                                                                                                          |
| enforcement                          | warehouse_exposure_source [*required*]       | string   | LOCKED prevents changes to warehouse exposure source. EDITABLE permits changes.                                                                                                                                                 |
| attributes                           | environment_id                                    | uuid     | ID of the feature flag environment used by the experiment.                                                                                                                                                                      |
| attributes                           | exposure_schedule                                 | object   | Traffic schedule. Publishing and replacement require `NO_ROLLOUT` with exactly one step, or `UNIFORM_INTERVALS` with a positive selection interval and at least one step. Requires `environment_id`.                            |
| exposure_schedule                    | autostart                                         | boolean  | Whether the exposure schedule starts automatically.                                                                                                                                                                             |
| exposure_schedule                    | guardrail_triggered_action                        | string   | Action taken when a guardrail triggers during the exposure schedule.                                                                                                                                                            |
| exposure_schedule                    | rollout_steps                                     | [object] | Rollout steps, replaced when supplied.                                                                                                                                                                                          |
| rollout_steps                        | exposure_ratio                                    | double   | Fraction of traffic exposed during this rollout step.                                                                                                                                                                           |
| rollout_steps                        | grouped_step_index                                | int64    | Index of the group that contains this rollout step.                                                                                                                                                                             |
| rollout_steps                        | interval_ms                                       | int64    | Duration of this rollout step, in milliseconds.                                                                                                                                                                                 |
| rollout_steps                        | is_pause_record                                   | boolean  | Whether this schedule entry represents a pause.                                                                                                                                                                                 |
| rollout_steps                        | order_position                                    | int64    | Position of this entry in the ordered configuration.                                                                                                                                                                            |
| exposure_schedule                    | selection_interval_ms                             | int64    | Interval between traffic selections, in milliseconds.                                                                                                                                                                           |
| exposure_schedule                    | strategy                                          | string   | Method used to increase traffic exposure over the schedule.                                                                                                                                                                     |
| attributes                           | is_duration_required_to_start [*required*]   | boolean  | Whether the protocol requires a duration before an experiment can start.                                                                                                                                                        |
| attributes                           | is_equal_split_enforced [*required*]         | boolean  | Whether the protocol requires equal traffic allocation across variants.                                                                                                                                                         |
| attributes                           | is_metric_limit_enabled [*required*]         | boolean  | Whether the protocol limits the number of metrics.                                                                                                                                                                              |
| attributes                           | is_minimum_duration_enabled [*required*]     | boolean  | Whether the protocol enforces a minimum experiment duration.                                                                                                                                                                    |
| attributes                           | metric_groups [*required*]                   | [object] | Metric groups.                                                                                                                                                                                                                  |
| metric_groups                        | is_decision                                       | boolean  | Whether this group contains decision metrics.                                                                                                                                                                                   |
| metric_groups                        | metrics                                           | [object] | Metrics in the group.                                                                                                                                                                                                           |
| metrics                              | metric_id [*required*]                       | uuid     | Metric UUID.                                                                                                                                                                                                                    |
| metric_groups                        | name                                              | string   | Metric group name.                                                                                                                                                                                                              |
| attributes                           | metric_limit                                      | int64    | Maximum number of metrics allowed by the protocol.                                                                                                                                                                              |
| attributes                           | migration_metadata                                | object   | Metadata for imported resources. Must encode to at most 4096 bytes. Null clears it; omission preserves it on update.                                                                                                            |
| attributes                           | minimum_duration_unit                             | string   | Minimum duration unit, DAYS or WEEKS.                                                                                                                                                                                           |
| attributes                           | minimum_duration_value                            | int64    | Minimum experiment duration in the specified unit.                                                                                                                                                                              |
| attributes                           | primary_metric_id                                 | uuid     | ID of the primary metric supplied by the protocol.                                                                                                                                                                              |
| attributes                           | subject_type_id [*required*]                 | uuid     | ID of the subject type used by this configuration.                                                                                                                                                                              |
| attributes                           | targeting_rules                                   | [object] | Targeting rules.                                                                                                                                                                                                                |
| targeting_rules                      | conditions                                        | [object] | Conditions in this rule.                                                                                                                                                                                                        |
| conditions                           | attribute                                         | string   | Subject attribute evaluated by the targeting condition.                                                                                                                                                                         |
| conditions                           | operator                                          | string   | Comparison applied to the subject attribute.                                                                                                                                                                                    |
| conditions                           | order_position                                    | int64    | Position of this entry in the ordered configuration.                                                                                                                                                                            |
| conditions                           | saved_filter_id                                   | string   | Saved filter UUID. Null selects an inline condition. An empty string skips the saved-filter lookup.                                                                                                                             |
| conditions                           | value                                             | [string] | Values compared with the subject attribute in this condition.                                                                                                                                                                   |
| data                                 | id                                                | uuid     | Protocol ID. If supplied, must match the path protocol_id.                                                                                                                                                                      |
| data                                 | type [*required*]                            | enum     | Protocols resource type. Allowed enum values: `protocols`                                                                                                                                                                       |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": {
    "type": "protocols",
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "attributes": {
      "subject_type_id": "550e8400-e29b-41d4-a716-446655440010",
      "is_equal_split_enforced": false,
      "is_minimum_duration_enabled": false,
      "is_duration_required_to_start": false,
      "is_metric_limit_enabled": false,
      "metric_groups": [],
      "default_duration_days": 14
    }
  }
}
```

{% /tab %}

### Response

{% tab title="200" %}
OK
{% tab title="Model" %}
Response containing the protocol.

| Parent field                         | Field                                           | Type      | Description                                                                                                                                                                     |
| ------------------------------------ | ----------------------------------------------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|                                      | data [*required*]                          | object    | JSON:API resource containing the protocol identity and fields.                                                                                                                  |
| data                                 | attributes                                      | object    | Settings and defaults supplied by the protocol.                                                                                                                                 |
| attributes                           | analysis_plan                                   | object    | Default statistical settings supplied by the protocol.                                                                                                                          |
| analysis_plan                        | compute_cuped                                   | boolean   | Whether to use pre-experiment data to reduce variance with CUPED.                                                                                                               |
| analysis_plan                        | confidence_interval_method                      | string    | Statistical method used to calculate confidence intervals.                                                                                                                      |
| analysis_plan                        | confidence_level                                | double    | Confidence level used by the statistical analysis.                                                                                                                              |
| analysis_plan                        | multiple_testing_correction_method              | string    | Method used to adjust for testing multiple metrics.                                                                                                                             |
| attributes                           | archived_at                                     | date-time | Time when the protocol was archived. Omitted if it has not been archived.                                                                                                       |
| attributes                           | assignment_source_default_properties            | [object]  | Default properties supplied by the protocol's assignment source.                                                                                                                |
| assignment_source_default_properties | column_name                                     | string    | Source column that supplies this assignment property.                                                                                                                           |
| assignment_source_default_properties | column_type                                     | string    | Data type of the source column.                                                                                                                                                 |
| assignment_source_default_properties | name                                            | string    | Display name of the assignment source property.                                                                                                                                 |
| attributes                           | assignment_source_id                            | string    | ID of the assignment source selected by the protocol.                                                                                                                           |
| attributes                           | created_at [*required*]                    | date-time | Time when the protocol was created.                                                                                                                                             |
| attributes                           | default_duration_days                           | int64     | Default experiment duration supplied by the protocol, in days.                                                                                                                  |
| attributes                           | description                                     | string    | Text that explains the protocol.                                                                                                                                                |
| attributes                           | enforcement                                     | object    | Controls that determine which protocol settings can be changed in an experiment.                                                                                                |
| enforcement                          | confidence_interval_method                      | string    | Always LOCKED. The server keeps this setting locked regardless of the supplied value.                                                                                           |
| enforcement                          | confidence_level                                | string    | LOCKED prevents changes to confidence level. EDITABLE permits changes.                                                                                                          |
| enforcement                          | cuped_calculation                               | string    | LOCKED prevents changes to CUPED variance reduction. EDITABLE permits changes.                                                                                                  |
| enforcement                          | default_duration                                | string    | LOCKED prevents changes to default duration. EDITABLE permits changes.                                                                                                          |
| enforcement                          | environment                                     | string    | LOCKED prevents changes to environment. EDITABLE permits changes.                                                                                                               |
| enforcement                          | flag_source                                     | string    | Always LOCKED. The server keeps this setting locked regardless of the supplied value.                                                                                           |
| enforcement                          | multiple_testing_correction                     | string    | LOCKED prevents changes to multiple testing correction. EDITABLE permits changes.                                                                                               |
| enforcement                          | notifications                                   | string    | LOCKED prevents changes to notifications. EDITABLE permits changes.                                                                                                             |
| enforcement                          | primary_metric                                  | string    | LOCKED prevents changes to primary metric. EDITABLE permits changes.                                                                                                            |
| enforcement                          | secondary_metrics                               | string    | LOCKED prevents changes to secondary metrics. EDITABLE permits changes.                                                                                                         |
| enforcement                          | split_by_exploration_dimensions                 | string    | LOCKED prevents changes to result exploration dimensions. EDITABLE permits changes.                                                                                             |
| enforcement                          | subject_type                                    | string    | Always LOCKED. The server keeps this setting locked regardless of the supplied value.                                                                                           |
| enforcement                          | targeting_rules                                 | string    | LOCKED prevents changes to targeting rules. EDITABLE permits changes.                                                                                                           |
| enforcement                          | traffic_exposure                                | string    | LOCKED prevents changes to traffic exposure. EDITABLE permits changes.                                                                                                          |
| enforcement                          | warehouse_exposure_source                       | string    | LOCKED prevents changes to warehouse exposure source. EDITABLE permits changes.                                                                                                 |
| attributes                           | environment_id                                  | string    | ID of the feature flag environment used by the experiment.                                                                                                                      |
| attributes                           | experiment_count                                | int64     | Number of experiments in the organization that use this protocol, excluding deleted experiments. Omitted if the count cannot be retrieved. An omitted count does not mean zero. |
| attributes                           | exposure_schedule                               | object    | Schedule that controls traffic exposure for experiments created from the protocol.                                                                                              |
| exposure_schedule                    | autostart                                       | boolean   | Whether the exposure schedule starts automatically.                                                                                                                             |
| exposure_schedule                    | guardrail_triggered_action                      | string    | Action taken when a guardrail triggers during the exposure schedule.                                                                                                            |
| exposure_schedule                    | rollout_steps                                   | [object]  | Ordered steps that define changes in traffic exposure.                                                                                                                          |
| rollout_steps                        | exposure_ratio                                  | double    | Fraction of traffic exposed during this rollout step.                                                                                                                           |
| rollout_steps                        | grouped_step_index                              | int64     | Index of the group that contains this rollout step.                                                                                                                             |
| rollout_steps                        | interval_ms                                     | int64     | Duration of this rollout step, in milliseconds.                                                                                                                                 |
| rollout_steps                        | is_pause_record                                 | boolean   | Whether this schedule entry represents a pause.                                                                                                                                 |
| rollout_steps                        | order_position                                  | int64     | Position of this entry in the ordered configuration.                                                                                                                            |
| exposure_schedule                    | selection_interval_ms                           | int64     | Interval between traffic selections, in milliseconds.                                                                                                                           |
| exposure_schedule                    | strategy                                        | string    | Method used to increase traffic exposure over the schedule.                                                                                                                     |
| attributes                           | is_duration_required_to_start [*required*] | boolean   | Whether the protocol requires a duration before an experiment can start.                                                                                                        |
| attributes                           | is_equal_split_enforced [*required*]       | boolean   | Whether the protocol requires equal traffic allocation across variants.                                                                                                         |
| attributes                           | is_metric_limit_enabled [*required*]       | boolean   | Whether the protocol limits the number of metrics.                                                                                                                              |
| attributes                           | is_minimum_duration_enabled [*required*]   | boolean   | Whether the protocol enforces a minimum experiment duration.                                                                                                                    |
| attributes                           | metric_groups [*required*]                 | [object]  | Metric groups supplied by the protocol.                                                                                                                                         |
| metric_groups                        | is_decision                                     | boolean   | Whether the group contains decision metrics.                                                                                                                                    |
| metric_groups                        | metrics                                         | [object]  | Metrics included in this group.                                                                                                                                                 |
| metrics                              | metric_id [*required*]                     | uuid      | Identifier of the metric to include in the collection.                                                                                                                          |
| metric_groups                        | name                                            | string    | Display name of the metric group.                                                                                                                                               |
| attributes                           | metric_limit                                    | int64     | Maximum number of metrics allowed by the protocol.                                                                                                                              |
| attributes                           | migration_metadata                              |           | Metadata retained for resources imported from another system.                                                                                                                   |
| attributes                           | minimum_duration_unit                           | string    | Unit used to express the protocol's minimum duration.                                                                                                                           |
| attributes                           | minimum_duration_value                          | int64     | Minimum experiment duration in the specified unit.                                                                                                                              |
| attributes                           | name [*required*]                          | string    | Display name of the protocol.                                                                                                                                                   |
| attributes                           | primary_metric                                  | object    | Subject type selected by the protocol.                                                                                                                                          |
| primary_metric                       | id                                              | string    | ID of the subject type.                                                                                                                                                         |
| primary_metric                       | name                                            | string    | Display name of the subject type.                                                                                                                                               |
| attributes                           | primary_metric_id                               | string    | ID of the primary metric supplied by the protocol.                                                                                                                              |
| attributes                           | published_at                                    | date-time | Time when the protocol was published.                                                                                                                                           |
| attributes                           | status [*required*]                        | enum      | Publication status of the protocol. Allowed enum values: `DRAFT,PUBLISHED,ARCHIVED`                                                                                             |
| attributes                           | subject_type                                    | object    | Subject type selected by the protocol.                                                                                                                                          |
| subject_type                         | id                                              | string    | ID of the subject type.                                                                                                                                                         |
| subject_type                         | name                                            | string    | Display name of the subject type.                                                                                                                                               |
| attributes                           | subject_type_id                                 | string    | ID of the subject type used by this configuration.                                                                                                                              |
| attributes                           | targeting_rules                                 | [object]  | Rules that select subjects for the experiment.                                                                                                                                  |
| targeting_rules                      | conditions                                      | [object]  | Conditions that define this targeting rule.                                                                                                                                     |
| conditions                           | attribute                                       | string    | Subject attribute evaluated by the targeting condition.                                                                                                                         |
| conditions                           | operator                                        | string    | Comparison applied to the subject attribute.                                                                                                                                    |
| conditions                           | order_position                                  | int64     | Position of this entry in the ordered configuration.                                                                                                                            |
| conditions                           | saved_filter_id                                 | string    | ID of the saved filter used by this targeting condition.                                                                                                                        |
| conditions                           | value                                           | [string]  | Values compared with the subject attribute in this condition.                                                                                                                   |
| attributes                           | updated_at [*required*]                    | string    | RFC3339 update time. Preserve all fractional seconds when passing this value as `expected_updated_at`.                                                                          |
| data                                 | id [*required*]                            | uuid      | ID of the protocol.                                                                                                                                                             |
| data                                 | type [*required*]                          | enum      | Protocols resource type. Allowed enum values: `protocols`                                                                                                                       |

{% /tab %}

{% tab title="Example" %}

```json
{
  "data": {
    "attributes": {
      "analysis_plan": {
        "compute_cuped": false,
        "confidence_interval_method": "string",
        "confidence_level": "number",
        "multiple_testing_correction_method": "string"
      },
      "archived_at": "2026-07-31T14:00:00Z",
      "assignment_source_default_properties": [
        {
          "column_name": "string",
          "column_type": "string",
          "name": "string"
        }
      ],
      "assignment_source_id": "string",
      "created_at": "2026-07-31T12:00:00Z",
      "default_duration_days": "integer",
      "description": "string",
      "enforcement": {
        "confidence_interval_method": "string",
        "confidence_level": "string",
        "cuped_calculation": "string",
        "default_duration": "string",
        "environment": "string",
        "flag_source": "string",
        "multiple_testing_correction": "string",
        "notifications": "string",
        "primary_metric": "string",
        "secondary_metrics": "string",
        "split_by_exploration_dimensions": "string",
        "subject_type": "string",
        "targeting_rules": "string",
        "traffic_exposure": "string",
        "warehouse_exposure_source": "string"
      },
      "environment_id": "string",
      "experiment_count": 0,
      "exposure_schedule": {
        "autostart": false,
        "guardrail_triggered_action": "string",
        "rollout_steps": [
          {
            "exposure_ratio": "number",
            "grouped_step_index": "integer",
            "interval_ms": "integer",
            "is_pause_record": false,
            "order_position": "integer"
          }
        ],
        "selection_interval_ms": "integer",
        "strategy": "string"
      },
      "is_duration_required_to_start": false,
      "is_equal_split_enforced": false,
      "is_metric_limit_enabled": false,
      "is_minimum_duration_enabled": false,
      "metric_groups": [
        {
          "is_decision": false,
          "metrics": [
            {
              "metric_id": "550e8400-e29b-41d4-a716-446655440000"
            }
          ],
          "name": "string"
        }
      ],
      "metric_limit": "integer",
      "migration_metadata": "undefined",
      "minimum_duration_unit": "string",
      "minimum_duration_value": "integer",
      "name": "Checkout conversion",
      "primary_metric": {
        "id": "string",
        "name": "string"
      },
      "primary_metric_id": "string",
      "published_at": "2019-09-19T10:00:00.000Z",
      "status": "PUBLISHED",
      "subject_type": {
        "id": "string",
        "name": "string"
      },
      "subject_type_id": "string",
      "targeting_rules": [
        {
          "conditions": [
            {
              "attribute": "string",
              "operator": "string",
              "order_position": "integer",
              "saved_filter_id": "string",
              "value": []
            }
          ]
        }
      ],
      "updated_at": "2026-01-01T00:00:00Z"
    },
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "type": "protocols"
  }
}
```

{% /tab %}

{% /tab %}

{% tab title="400" %}
Invalid request or protocol settings.
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="401" %}
Missing or invalid authentication.
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="403" %}
The caller lacks the product_analytics_experiments_write permission.
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="404" %}
No protocol with this ID exists in the organization.
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="409" %}
The protocol is not published or expected_updated_at is stale.
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="415" %}
Unsupported request content type.
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="429" %}
Too many requests
{% tab title="Model" %}
API error response.

| Field                    | Type     | Description       |
| ------------------------ | -------- | ----------------- |
| errors [*required*] | [string] | A list of errors. |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    "Bad Request"
  ]
}
```

{% /tab %}

{% /tab %}

{% tab title="500" %}
Internal Server Error
{% tab title="Model" %}
API error response.

| Parent field | Field                    | Type     | Description                                                                     |
| ------------ | ------------------------ | -------- | ------------------------------------------------------------------------------- |
|              | errors [*required*] | [object] | A list of errors.                                                               |
| errors       | detail                   | string   | A human-readable explanation specific to this occurrence of the error.          |
| errors       | meta                     | object   | Non-standard meta-information about the error                                   |
| errors       | source                   | object   | References to the source of the error.                                          |
| source       | header                   | string   | A string indicating the name of a single request header which caused the error. |
| source       | parameter                | string   | A string indicating which URI query parameter caused the error.                 |
| source       | pointer                  | string   | A JSON pointer to the value in the request document that caused the error.      |
| errors       | status                   | string   | Status code of the response.                                                    |
| errors       | title                    | string   | Short human-readable summary of the error.                                      |

{% /tab %}

{% tab title="Example" %}

```json
{
  "errors": [
    {
      "detail": "Missing required attribute in body",
      "meta": {},
      "source": {
        "header": "Authorization",
        "parameter": "limit",
        "pointer": "/data/attributes/title"
      },
      "status": "400",
      "title": "Bad Request"
    }
  ]
}
```

{% /tab %}

{% /tab %}

### Code Example

##### 
                          \## default
# 
 \# Path parameters export protocol_id="550e8400-e29b-41d4-a716-446655440000" \# Use a Personal Access Token or Service Access Token export DD_BEARER_TOKEN="<PERSONAL_ACCESS_TOKEN OR SERVICE_ACCESS_TOKEN>"  \# Curl command curl -X PUT "https://api.datadoghq.com/api/v2/experiments/protocols/${protocol_id}" \
-H "Accept: application/json" \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${DD_BEARER_TOKEN}" \
-d @- << EOF
{
  "data": {
    "attributes": {
      "is_duration_required_to_start": false,
      "is_equal_split_enforced": false,
      "is_metric_limit_enabled": false,
      "is_minimum_duration_enabled": false,
      "metric_groups": [],
      "subject_type_id": "c2b3d4e5-0000-0000-0000-000000000000"
    },
    "type": "protocols"
  }
}
EOF 

                        
{% /tab %}
