Trying to upload PDF invoice to Amazon MWS results in Error: “Please provide only one valid marketplace while uploading an invoice”
问题 I am currently trying to figure out how to upload my own invoice pdf files to Amazon MWS with php/curl: 1.) Upload pdf to Amazon MWS using Action: SubmitFeed and FeedType: _UPLOAD_VAT_INVOICE_ This is giving a positive response with a FeedSubmissionId 2.) Get Feed Submission Result with that FeedSubmissionId is reporting an Error 79523 "Please provide only one valid marketplace while uploading an invoice." So I assume that my upload is not working properly, but I can not find the mistake. The