# Partially update value points for items

Partially updates the number of value points for one or more items by the item’s SKU. Users receive these value points after purchasing the specified items.

Principles of updating value points:
  * If an item does not yet have value points, sending a non-zero value in the amount field creates them.
  * If an item already has value points, sending a non-zero value in the amount field updates them.
  * If amount is set to 0, the existing value points for that item are deleted.

Unlike the PUT method (Set value points for items), this PATCH method does not overwrite all existing value points for items in the project, it only updates the specified items.

A single request can update up to 100 items. Duplicate item SKUs cannot be included in the same request.

Endpoint: PATCH /v2/project/{project_id}/admin/items/{value_point_sku}/value_points/rewards
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

  - `value_point_sku` (string, required)
    Value Point SKU.
    Example: "value_point_3"

## Request fields (application/json):

  - `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"

  - `amount` (integer, required)
    Amount of value points.

## 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: 404

  - `errorCode` (integer)
    Example: 4001

  - `errorMessage` (string)
    Example: "[0401-4001]: Item with sku = 'electric_shiel' not found"


## Response 204 fields