Error while creating the service entry sheet in PRD

Question

Hi All,
We are in SAP R/3 4.7 Version. OF39 settings are 58 & 61 Statistical update only ! Now my case is i assigned Rs.100 Budget agaisnt one FC & Comitmetn item & created one service Purchase order Rs.80 & Make down payment against same PO Rs.80.
Now as per above mentioned scenario ,system should allow new Purchase order creation for Rs. 20. But my system is allowing to create up to Rs.100. I am very much sure system not allowed the same and also allow for service entry creation for first PO. But system given error message while doing the Service sheet.
Kindly advice. OF39 settings are OK .Both are statistical only
Rgds
ManiSuma

Answer 1

Hi Manisuma, statistical update is recommended to be used only at the begining of a document chain (i.e.purchase requisition or funds reservation) cause if you set it in intermediate documents as you did the budget is set as available, in your example the downpayment reduces the purchase order commitment, and as the downpayment is statistical it does not affect the Availability Control, so the amount (80 in your example) becomes available again so new commitments/actual can be created.
Regards
Cesar