MM-PUR: GR amount is different from IR amount for PO

Question

Problem statement:
The GR amount showing in the PO history is greater than the IR amount.
Root Cause:
The following steps were taken in chronological order for the PO line item (PO quantity is 1, amount is 100):-
1. Invoice post (MIRO) was carried out for the line item with amount 100 and quantity 1.
2. User then wanted to reverse the invoice posted, so Subsequent Credit (MIRO) was carried out for the line item with amount 100, which caused the following problem.
3. Invoice posted (MIRO) again for the line item with amount 100 and quantity 1. As subsequent credit in step 2 will not deduct the quantity, the system thinks the total quantity received is 2 now!
4. User cancel the invoice post by using MR8M which result in leaving amount 50 in GR/IR clearing account because the reversal quantity is 1, and the rest 50 was posted to stock account.
5. Invoice posted (MIRO) again for the line item with amount 100 and quantity 1. Now the amount in GR/IR clearing account is 150.
6. Goods Receipt (GR) was performed with amount 150 to clear the GR/IR account. Now the amount on the last invoice is 100, but GR shows 150.
Question:
1. How to resolve this difference (note: all the related account document have been cleared already)?
2. As stated in the online help, Subsequent Debit/Credit has no impact on quantity. But why the quantity field still shows -1 for the subsequent credit in the PO history tab?
Thank you in advance for your help! Any comments would be appreciated!
Cheers,
Aaron
Edited by: Yibing Wang on Jun 30, 2008 6:22 PM
Edited by: Yibing Wang on Jun 30, 2008 6:23 PM

Answer 1

solved