For VAN users, the message routing is done according to the Interchange sender ID that is found in the ISA segment, and the ISA06 interchange ID inbound profile parameter value defined for the partner. VAN routing is based on the assumption that the partner sender id is unique and the value appears in the partner profile parameters. When a

HIPAA

file is received from VAN, a DX event is created and processed as follows.

The ISA06 (Interchange Sender ID) value is extracted from the ISA segment.
The DX repository is searched to find a matching profile.
If a matching profile is found, the message is routed to that profile via DX return queue. The following screenshot shows the match on Sender ID.

When the message arrives at the Partner, the profile process continues as described in the
HIPAA
Accelerator Release notes.