Rebate Settlements

Question

Hi all
I am a rebate analyst in a retail organisation and use SAP R3 Production to control all rebate agreements.
We would have a large volume of individual rebate agreements for vendors and need to regularly set up [<i>USING CODE MEB1]</i> maintain <i>[using CODE MEB2]</i> and settle monthly <i>{using CODE MEB4}</i> very large income on the back of these agreements. SAP can only settle agreements if Accounts Payable have entered the vendor invoice. Now a problem has arisen and need some advice:
Agreement no 12345 has a -10% accrual against vendor 987654.
This agreement is valid from 1st January 2007 to 31st May 2007.
I have successfully settled from January through to April [bearing in mind that if an invoice is not entered on the day I settle, SAP will catch it in the next run provided that the invoice date is entered correctly <i>[within tcode MIRO]</i> with a date range between 1st to 30th April.
As the date of expiry on this agreement is 31st May 2007, I understand it is crucial not to perform a full and final settlement for May in the event that all invoices are not entered for May.
Meanwhile I have now copied a brand new agreement no.12346 running from 1st June 2007 to 31st Dec 2007.
Assuming that every invoice and income has been captured from Jan 07 to Apr 07 and settled correctly let us say you now have a situation that there were 15 purchase orders created within May '07 @ EURO 1000 each , you would expect 15 invoices to be entered to complete this agreement. Total income due over May period €1,500. However, if the vendor inadvertenly forgets to bill us for one of these invoices and realises 3 months later that it needs to be invoiced then, more often than not the vendor will invoice say 31st August 2007. Income due on this invoice is €100.  If vendor had backdated his invoice date to 31st March then by way of partial settling in rebate agreements SAP would know  that it needs to collect the final €100 income on this remaining invoice but there appears to be no safety net there if an agreement has a final date and the invoice is dated after this final date.
New agreeemnt no. 12346 does not capture this missing income because it relates back to agreement 12345
How do I get SAP to capture this income, using this logic?
I have tested and I know that if we had extended the agreement [12345] out until end of year <i>[so now the original agreement 12345 no longer is from Jan to May but Jan to DEC]</i> the income would have been captured when we settled August but in this scenario I have created a new agreement with same condition types SAP does not capture this missing income in the new agreement.
Any comments / advice on this matter is greatly appreciated.

Answer 1

First one referred by you is a standard transaction code and the second one is a BADI where you can modify the logic to suits the Business requirement.  For more information, go through this documentation.
Extensions to Settle Rebate Agreements - Extended Rebate Processing - SAP Library
G. Lakshmipathi