When the packaging of the document is specified as AS, WebSphere Partner Gateway performs some additional processing.
When an EDI document is received from a community participant:
If the values in the header fields do not match valid IDs, WebSphere Partner Gateway does not route the document.
When an EDI document is received from a back-end system, WebSphere Partner Gateway determines whether an AS BusinessID attribute has been specified for both the source packaging (None) and the target packaging (AS):
Because WebSphere Partner Gateway uses both the AS1 or AS2 header information as well as the information derived from the EDI document, the IDs for the same participant could be in different forms. For example, the AS header information for the sender could be 123456789 while the information derived from the EDI document could be AB-12345678.
Make sure that you have listed both IDs in the profile for the community participant. Refer to the Hub Configuration Guide for information.