Changes quantity for an order item. Automatically updates order discount and the shipping cost.


  • item_id POST

    Order item ID.

  • quantity POST


  • format GET Optional

    Sets response format. Available options: json (default), xml.

Return value

Method execution results array with the following keys:

  • status string 'ok' in case of success or 'fail' in case of a failure.
  • errors mixed Error messages if available.