Incoming Payment (ISR) - Possibility to parameterize the ISR reference
When a customer receives from the bank the cam054 file he goes in SAP in :
BANKING-->INCOMING PAYMENTS-->INCOMING PAYMENTS(ISR).
The program match the ISR number in the importing file with the one written in the A/R Invoice in the field ISR Ref.No.
I'd like to have the possibility to parameterize where Incoming Payment reads the ISR Nr. I'd like the Incoming Payment should read the ISR number from a user field in the OINV.
The standard OINV ISR Ref. No. is calculated by SAP and not changeble, I'd like to allow to the employ to write the user field and put the number calculated from an external program.