Mark an order item as being ready to ship.

The API responds by sending purchase order details in the response:

PurchaseOrderIdUnsignedSeller Center
identification
PurchaseOrderNumberStringOrder number in
Seller Center

Errors

Error codeMessageExplanation
20E020: "%s" Invalid Order Item ID
21E021: OMS Api Error Occurred
23E023: "%s" Invalid Order Item IDs
25E025: "%s" Invalid Shipping Provider
26E026: "%s" Invalid Tracking Number
29E029: Order items must be from the same order
31E031: Tracking ID incorrect. Example tracking ID: "%s"
73E073: All order items must have status Pending or Ready To Ship. (%s)
63E063: The tracking code %s has already been used
91E091: You are not allowed to set the shipment provider and tracking number and the delivery type is wrong. Please use send_to_warehouse
119E119: Some order items are not yet ready to be processed, please try again later. (%s).One or more order items are not fully handled by Seller Center, so they cannot be processed yet.
121E121: Invalid Packing ID
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