Hi,
Cross check manually output type ZNNN removed for inter-company purchase order!
You should have separate Purchase order document type for inter-company PO.As you have output type ZNNN for inter-company PO and now cross check- you have message condition record available in t.code:MN06 for output type ZNNN and document type for inter-company PO.
Make sure you have following setting for output type ZNNN in following path:
SPRO - > MM - > Purchasing - > Message - > Output control - > Message Types - > Define message type for Purchase Order- > Define Message Types for Purchase Order
Now double click your PO Message Type ZNNN
1. Select check box of "Access to conditions".
2. Select check box of “Cannot be Changed".
3. Select check box of "Multiple issuing".
Now maintain message condition record in t.code:MN04 for output type ZNNN and document type for inter-company PO.
Create inter-company PO with inter-company PO document type and as message condition record maintained, output type ZNNN triggers automatically and manual change not possible.
Regards,
Biju K