I have the following issue. We have an inter-company purchase set up in our system where, a MIRO document gets posted in background automatically via IDoc every time a billing document is posted. The issue is, on few occasions, the MIRO line item tax code is different from the corresponding PO line item tax code. The same is not consistent as on other days, the data looks good, but recently we have been witnessing these kind of inconsistencies.
Example of the recent behavior as below:
PO#1, Article: M1, PO Tax code: A1, MIRO Tax code: A1 (posted on 01.07.2017) =correct
PO#2, Article: M1, PO Tax code: A1, MIRO Tax code: N1 (posted on 02.07.2017) =incorrect
PO#3, Article: M1, PO Tax code: A1, MIRO Tax code: A1 (posted on 03.07.2017) =correct
FYI, it is a Retail System, though this functionality is MM/SD integration.
I would appreciate any of your kind and quick input which would help me resolve this issue.