IDOCS with Incoming Invoices showing Fake 53 status

Hi All,

I have a Third party scenario where we are sending the PO to Vendor through EDI and Vendor is sending the Invoice through IDOCS. If the PO balance matched the Invoice Amount then the IDOC should be a 53 [Success] if not a 51 status [Error].

But here most of the incoming invoices from EDI are showing fake 53 status. Normally when the IDOCS are Successful 53 it shoud create an Invoice

Document with Follow on Documents  and Invoice doc should reflect in PO History.

But in this case the Invoice document is created with no follow on documents and the same is not reflected in PO History. Please help us fixing this.

Processing indicator in transaction OMRY is set as 1 [Unclarified error: Park Invoice]

Thanks,

Sai Arala