Amazon requires the SupplierPartAuxiliaryId in the Purchase Order so I had to using mapping in the rqc_confix.xml file to map it to the PO_USER_FIELD_4 in the line data. In order to send it via EDI I had to modify POIMGWS to allow a length of 30 for user field 4 and change user field 6 to 10. I then recompiled POI7 and PO120. I also had to create a separate laws_out_91 for Amazon because of other requirements. I do think Infor may have provided patches to handle the SupplierPartAuxiliaryId, but we are so far behind we had to go this route. Let me know if you would have anymore questions. Thank you.