# Create attribute value

Creates an attribute value.

AttentionAll projects have the limitation to the number of attribute values. The default and maximum value is 20 values per attribute.

Endpoint: POST /v2/project/{project_id}/admin/attribute/{external_id}/value
Version: 2.0.0
Security: basicAuth

## Path parameters:

  - `project_id` (integer, required)
    Project ID. You can find this parameter in your Publisher Account next to the name of the project.
    Example: 44056

  - `external_id` (string, required)
    Attribute external ID.
    Example: "attribute_id"

## Request fields (application/json):

  - `external_id` (string, required)
    Unique value ID for an attribute. The external_id may only contain lowercase Latin alphanumeric characters, dashes, and underscores.
    Example: "attribute_value"

  - `value` (object, required)
    Object with localizations of the value's name. Keys are specified in ISO 3166-1.
    Example: {"en":"Strategy","de":"Strategie"}

## Response 201 fields (application/json):

  - `external_id` (string)
    Unique value ID for an attribute. The external_id may only contain lowercase Latin alphanumeric characters, dashes, and underscores.
    Example: "attribute_value"

## Response 401 fields (application/json):

  - `statusCode` (integer)
    Example: 401

  - `errorCode` (integer)
    Example: 1020

  - `errorMessage` (string)
    Example: "[0401-1020]: Error in Authentication method occurred"

## Response 403 fields (application/json):

  - `statusCode` (integer)
    Example: 403

  - `errorCode` (integer)

  - `errorMessage` (string)
    Example: "Authorization header not sent."

  - `transactionId` (string)
    Example: "x-x-x-x-transactionId-mock-x-x-x"

## Response 404 fields (application/json):

  - `statusCode` (integer)
    Example: 404

  - `errorCode` (integer)
    Example: 9901

  - `errorMessage` (string)
    Example: "[0401-9901]: Attribute not found."

  - `transactionId` (string)
    Example: "x-x-x-x-transactionId-mock-x-x-x"

## Response 422 fields (application/json):

  - `statusCode` (integer)
    Example: 422

  - `errorCode` (integer)
    Example: 1102

  - `errorMessage` (string)
    Example: "[0401-1102]: Unprocessable Entity. The property `property_name` is required"

  - `transactionId` (string)
    Example: "x-x-x-x-transactionId-mock-x-x-x"