Retrieve order-related documents: Invoices, Shipping Labels and Shipping Parcels.

To reconstruct the file the data from the File node needs to be base64 decoded, and
interpreted according to the MimeType.


Error codeMessage
20E020: "%s" Invalid Order Item IDs
21E021: OMS Api Error Occurred
32E032: Document type "%s" is not valid
34E034: Order Item must be packed. Please call setStatusToReadyToShip before
35E035: "%s" was not found