hey, I am getting this error when trying to set the inventory detail on an item fulfillment, I can't seem to figure out what it could be:

You do not have permissions to set a value for element inventoryassignment.receiptinventorynumber due to one of the following reasons: 1) The field is read-only; 2) An associated feature is disabled; 3) The field is available either when a record is created or updated, but not in both cases.

sounds like you are setting the wrong field

thank you !