In fact, the subject of a payment to the supplier is the responsible of the SBS PtP and not through the ACT in any way because the bill was not billed to the Account Department ,no any documents through Accounting.
We will review the record when account payable is recorded in the SAP system and will be checked when SBS PtP make a payment to ensure that the payment is correct.
So. If there are a mistake you should complain to SBS PtP directly.
Best regards,
Anuwat