Diagnosis
You posted a service entry sheet against a specific type of purchaseorder line:
1) The PO you posted your serv ice entry sheet against is a PO createdin an SRM system (table EKKO, field STATU = 'K').
2) The service line is flagged as 'Blanket Line' (table EKPO, fieldPAUSCH = 'X')

System Response
The gross price of PO service lines is treated differently than thestandard behavior. The system does not display the actual gross price,but the open amount of the service line flagged as blanket line. Theopen amount is calculated by the difference of the gross price minus thesum of amounts released against the PO posted in service entry sheets.

Procedure
One can change the system behavior by customizing. Activate / deactivatethe open amount recalculation in the corresponding IMG activity:Activate Re-Calculation of Gross Price in Service Entry Sheet