I reinstalled WMEDiforTn and all seems to be working. In the documentation it states that the instance id query will be used to specify the document id for my transaction document. I used the EDI TN administrator to specify ST/BEG/BEG03 as my instance query. when i view the transaction alalysis report the document id seem to be set to the control number on my ST/SE segments rather than my Purchase Order number. Can someone please explain this.
P.S I love using this forum, the response from the world and the webmethods team is very timely and has been a great help to me. Thanks to all.