Invoice register is matched with purchase order. Transaction shows wrong posting type on approval process.

Actual result
Arrival account = Vendor incoming
Offset account = Vendor incoming

Expected result
Arrival account = vendor balance
Offset account = Vendor incoming

As consequence, all reports based on vendor balance posting type can be wrong.
In this case, French tax audit report (FEC) does not report CompAuxNum (vendor account) as not vendor balance posting type.
Audit file is inconsistent.