# Activate a user

Activate the user identified by the `user_id` path parameter.
By default, any new users created will be automatically activated. This operation needs to be used only if the user was previously de-activated using the *userDeactivate* operation, or if the user was de-activated automatically after multiple incorrect login attempts.
Required user role: `ADMIN`

Endpoint: POST /v1/users/{user_id}/activate
Version: v1
Security: apiKey, authToken

## Path parameters:

  - `user_id` (string, required)
    The unique identifier for the user.

## Header parameters:

  - `idempotency-ref` (string)
    A unique call reference generated by the caller that, taking into consideration the payload as well as the operation itself, helps avoid duplicate operations. Idempotency reference uniqueness is maintained for at least 24 hours.

## Response 400 fields (application/json):

  - `message` (string)
    When present helps to identify and fix the problem.

  - `syntaxErrors` (object)
    Is returned as part of an HTTP error response whenever a syntax error is detected. A list of the fields together with their syntax error will be provided.

  - `syntaxErrors.invalidFields` (array)

  - `syntaxErrors.invalidFields.params` (array)

  - `syntaxErrors.invalidFields.fieldName` (string)

  - `syntaxErrors.invalidFields.error` (string)
    Enum: "REQUIRED", "HAS_TEXT", "REQUIRES", "SIZE", "RANGE", "IN", "NOT_IN", "REGEX", "EXACTLY", "AT_LEAST", "AT_MOST", "ALL_OR_NONE"

## Response 403 fields (application/json):

  - `errorCode` (string)
    Enum: "INSUFFICIENT_PERMISSIONS"

## Response 404 fields (application/json):

  - `code` (string)

  - `message` (string)

## Response 409 fields (application/json):

  - `errorCode` (string)
    Enum: "IDEMPOTENT_REQUEST_IN_PROGRESS"

## Response default fields (application/json):

  - `code` (string)

  - `message` (string)