Parse 850 file of two separate accounts of one client Using single Trading Partner ID

Question

We have one client having two account numbers and single trading partner id. Now the client sends PO(s) through VAN (Value added Network),

My Question: Is there any way to identify for which 
account number's PO is received?

Our Van process is identifying the PO on the basis of Trading Partner ID. We need to sort the PO(s) according to account number.

Answer 1

The N104 would be a good way to do it. Most of the time, the N104 would designate store location, which you would cross-reference in your application to your account number.

A REF02 could also work, but the N104 was really made for this.

Answer 2

yes, that can be problematic. check andrew's answer for this, maybe other options:
- GS02 (sender)
- I one had to check the items numbers to find out the right accountID.
Check why the edi-partner has 2 accounts. This often gives a good clue on how to handle this.
And check if it is still needed ;-))