A quick follow-up question.
I'm trying to create the WS Request and one of the fields in the structure is called "PurchaseRequest". I tried to associate the PurchaseRequest field directly, but the required data type is "PurchaseRequestToSRM_OUTPurRepERPSrcgReqPurReq". I have never seen this data type and I have no idea how to create one from a simple PurchaseRequest BO.