Update the Grp. Curr Exg. Rate in BKPF and Amt in 2nd local curr in BSEG

Question

Environment is
R3 4.7
Group Currency: TWD
Company Currency: USD
My customer has a scenario :
PO uses USD, Invoice Verification uses USD. When doing the MIRO, system will automatically write group currency/exchange rate in BKPF and Amount in 2nd Currency in BSEG according to the m-rate.
However, my customer wants to use an exchange-rate recorded in MIRO header, not m-reate.
All the user exits and BADI I reviewed cannot do anything to change the BKPF and BSEG. Is there any suggestion?
All UE and BADI I checked are:
User exits                                
MRMH0001                              
MRMH0002                              
MRMH0003                              
MRMN0001                              
LMR1M001                              
LMR1M002                              
LMR1M003                              
LMR1M004                              
LMR1M005                              
LMR1M006                              
BADI                           
INVOICE_UPDATE
Edited by: Paul C. Lee on Nov 15, 2011 4:10 PM

Answer 1

Hi Paul,
As a first step, see these notes
SAP Note 191927 - Posting logic: GR for foreign currency PO
SAP Note 308008 - FAQ: Posting logic: GR/IR clearing account (question 12 for instance)
To know the proper BADI, enhancement and so on, check this note
SAP Note 1156325 - BAdIs in the Logistics Invoice Verification environment
If you can't do a modification, try with a check for the right exchange rate.
I hope this helps you
Regards
Eduardo
Edited by: E_Hinojosa on Nov 15, 2011 11:59 AM