# Claim free offer chain step

Completes the current user’s progression through the offer chain step and grants the associated reward.

  Notice
    Use this call only for free steps in the offer chain.
    For steps that require payment in real currency, use the Create order for paid offer chain step call instead.
  
  Note
    This API call uses a user JWT for authorization.
    Include the token in the Authorization header in the following format: Bearer <user_JWT>. For more information about user JWT, see the Security block for this call.

Endpoint: POST /v2/project/{project_id}/user/offer_chain/{offer_chain_id}/step/number/{step_number}/claim
Version: 2.0.0
Security: XsollaLoginUserJWT

## Path parameters:

  - `project_id` (integer, required)
    Project ID. You can find this parameter in your Publisher Account next to the project name and in the browser address bar when working with a project. The URL has the following format: https://publisher.xsolla.com//projects/.
    Example: 44056

  - `offer_chain_id` (integer, required)
    Offer chain ID.
    Example: 101

  - `step_number` (integer, required)
    Offer chain step number.
    Example: 1

## Response 200 fields (application/json):

  - `order_id` (integer)
    Order ID.

## Response 401 fields (application/json):

  - `statusCode` (integer)
    Example: 401

  - `errorCode` (integer)
    Example: 1501

  - `errorMessage` (string)
    Example: "[0401-1501]: Authorization failed: Provide authorization"

## Response 404 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"

  - `errorMessageExtended` (object,null)

## 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"

  - `errorMessageExtended` (object,null)