When the Data Exchange Server sends a JMS message to PowerCenter for processing, the JMS message header contains the DXDataByReference property to indicate whether the JMS message body contains a document or a document reference. If the DXDataByReference property is true, the JMS message body contains a document reference. If the value is false, the JMS message body contains the document data as a BLOB.

When PowerCenter sends a JMS message to B2B Data Exchange, the JMS message header should also contain the DXDataByReference property. By default, if the JMS message header does not contain the property, B2B Data Exchange assumes that the JMS message body contains document data.