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.