How can you interface committments to both projects and cost centers when no Purchase order interface to the project system

We could interface project funds committments to SAP using data from an external procurment agency who manage our contract.  However, you need to reduce manually when actual costs are incurred.  We upload the actual costs to cost centers in SAP CO on a monthly basis.

Can you think of any way that it is possible to easily reduce the financial committment for the actual costs by interface and not having to select each committment record.

We do not have the purchase order functionality which interfaces with SAP PS.  Desperate to find a solution on how we can get the contracts booked as committments and reduce based on the actual cost file which will be uploaded in bulk.

It is possible to feed a -ve amount to a dispo table or to a field in SAP which stores the committments.

Anyhow, if anyone is kind enough to respond - it would really help.

 

 



Software/Hardware used:
SAP CO & SAP PS