Update order items availability

Allows the partner to update the quantities for order items. The endpoint accepts amendments for multiple items in a single
call. It is recommended that the integrating partner batches all the substitutions for an order in a single call
of this endpoint in order to avoid receiving a rate limit exceeded error.

Request restrictions

  • Order has to be in the 'PLACED' status in order to successfully process this request.
  • An item (identified by id) can be amended only once.
  • The final_quantity value has to be less than the original quantity value.
  • Unchanged items are not allowed in the request.
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