Hi Mike,
Could you check your mapping logic. If I understood correctly you want to have invoice before GR posting w.r.t. to Sales order in sending system to purchase order in receiving system. If this is correct then, why delivery number of sending is mapped against PO number of receiving system.
On the basis of delivery note you should have relevant PO number in the IDOC to search for the same in reviving system and then post it accordingly.
When sending system is sending the billing doc. (considering this is how you have architect), then invoice has to be generated in receiving but w.r.t. PO and I think field mapping is not that way.
| Sending System | Receiving System | ||
| Sales Order | Purchase Order | ||
| Out. Delivery w/o PGI | |||
| Billing Doc | Invoic Doc |
|
Cross check and let me know that's the case. If no, let me know what am I missing.
regards
Rahul