# Update offer chain

Updates a particular offer chain.

Endpoint: PUT /v2/project/{project_id}/admin/offer_chain/id/{offer_chain_id}
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

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

## Request fields (application/json):

  - `id` (integer)
    Unique offer chain ID.
    Example: 9

  - `name` (object,null, required)
    Object with localizations for item’s name. Accepts value in one of two formats: two-letter lowercase language codes (e.g., en) or five-character language codes (e.g., en-US). While both formats are accepted as input, responses return two-letter lowercase language codes. When both options for the same language are provided (e.g., en and en-US), the last provided value is stored. You can find the full list of supported languages in the [documentation](/doc/shop-builder/references/supported-languages/).

  - `order` (integer)
    Defines arrangement order.
    Example: 1

  - `description` (object,null)
    Object with localizations for item’s description. Accepts value in one of two formats: two-letter lowercase language codes (e.g., en) or five-character locale codes (e.g., en-US).  While both formats are accepted as input, responses return two-letter lowercase language codes. When both options for the same language are provided (e.g., en and en-US), the last provided value is stored. You can find the full list of supported languages in the [documentation](/doc/shop-builder/references/supported-languages/).

  - `date_start` (string, required)
    Date when the offer chain starts.
    Example: "2020-04-15T18:16:00+05:00"

  - `date_end` (string,null)
    Date when the offer chain ends. Can be null. If date_end is null, the offer chain will not have a time limit.
    Example: "2020-04-15T18:16:00+05:00"

  - `is_enabled` (boolean, required)
    Example: true

  - `recurrent_schedule` (object,null)
    Reset period of the offer chain.

  - `steps` (array, required)

  - `steps.step_id` (integer,null)
    Unique chain step ID. Specify it during update to retain user progress for this step.
    Example: 10

  - `steps.step_number` (integer, required)
    Step number.
    Example: 2

  - `steps.is_free` (boolean, required)
    Indicates whether the offer chain step is free:If true, the step must be claimed using the Claim free offer chain step call.If false, it must be purchased using the Create order for paid offer chain step call.

  - `steps.items` (array, required)

  - `steps.items.sku` (string, required)
    Unique item ID. The SKU may contain only lowercase and uppercase Latin alphanumeric characters, periods, dashes, and underscores.
    Example: "booster_mega_1"

  - `steps.items.quantity` (integer, required)
    Reward item quantity for this chain step.

  - `steps.items.order` (integer,null)
    Reward order for the offer chain step.

  - `is_always_visible` (boolean)
    Whether the chain is visible to all users:
* If true, the chain is always displayed, regardless of the user's authentication status or attributes.
* If false, the chain is displayed only if no personalized chain is found. For example, if the user is not authenticated or their attributes don’t match any personalized chain.

Applies only in the context of personalized chains and is used if the attribute_conditions array is not passed.
    Example: true

  - `attribute_conditions` (array)
    Conditions for validating user attributes.
Determine chain availability based on whether user attributes match all specified conditions.

## Response 401 fields (application/json):

  - `statusCode` (integer)
    Example: 401

  - `errorCode` (integer)
    Example: 1020

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

## 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)


## Response 204 fields