Differences IRF between Condition SD and Tax code FI

Question

Hello friends.
In a specific process, we have two distinct processes (example):
1) SD Document originary from TM
Condition YR01 ->  +100.00 - Gross marge for calculation of IRF
Condition YR02 ->  -15.00    - Tax 2
Condition YR03 ->  -5.00      - Tax 3
Condition YR04 ->  +80.00    - net for calculation of IRF
Tax calculation: 8.00
2) Invoice Entry (by MM-MIRO)
Ex.: accounting documents is generated with:
In Suplly Master Data: IRF Tax Category: IC. IRF Tax Code: C0
Gross marge for calculation of IRF: +100.00
Tax calculation: 10.00
Due to the client's process, we need to compensate the SD document with the accounting documents of FI, but the process cannot be completed because there is a difference in the calculation of the IRF Tax between the two processes.
According to the client, the source of the document in TM is right, i.e. tax is really 8.00.
The question is: How to adjust this on FI to consider both tax (YR02 e YR03)?
I appreciate your attention.
GLippmann

Answer 1

I did with depending IRF codes:
Financial Accounting New -> Financial Account. GL Settings New -> Witholding Tax -> Extended Witholding Tax -> Witholding Tax Base Amounting -> Portray Dependencies between Witholding Tax Type.
GLippmann