I have a few invoices with tax amount > 0 but the corresponding records in SOP10101 shows 0 in NCOMAMNT field and the CMMSLAMT is the same as ACTSLAMT. In my understanding tax should be part of the NCOMAMNT (as most of my other invoices do).
Can someone give me a clue on what might be the cause or where to start with for the troubleshooting?
Thanks a lot!