You can use SAP Adapter to create an DESADV/DELVRY01 IDOC (IS Document type structure) by two ways
Either IDOC team can provide the dtd’s from the SAP site or create a RFC listener notification where it can pull the IDOC definition that’s available in your SAP ECC system (assuming the RFC destination is tested and delivery IDOC’S are available to consume which your BASIS/SAP team can assist you on this part)
HTH,
RMG
#webMethods#Integration-Server-and-ESB#edi