Using Credit Note in A/P Invoice

Question

Hello Experts,
My Client Scenario is
1. Purchase person Create  a Purchase Order 100 Quantity.
2. Store Person Create Goods Received PO for a 100 Quantity
    And after quality check.
3. Goods Return 20 Quantity against Goods Received PO.
    Account Person want to create A/P Invoice for 100 Quantity.(But SAP show  error ,Quantity           exceeds from Base document Quantity)
It is Possible Or Not .
4. After Create A/PInvoice for 100 Quantity,Create for A/P Credit Note for a vendor(For 20 Quantity) copy from Goods Return Documents( But Goods Return Documents becoms Close (Status) Based on Goods Receive PO)
Suggest me how can i implements this Scenario..
Thanks & Regards
Mr.Krishna

Answer 1

hi krishna,
You can do it any one of following ways.
B1 Process for your scenario :
1. Create a PO for 100 qty , GRPO for 100 qty from PO , AP Invoice from GRPO for 100 qty ,
   Create individual goods return for 20 qty , Create AP Credit Memo from goods return for 20 qty.
2. Create a PO for 100 qty, GRPO for 100 qty , Goods return frm GRPO for 20 qty ,
    Create AP invoice from GRPO for 80 qty.
Hope it solves the problem.
Jeyakanthan