SAP Message VPKGUI101 - Total of amounts entered exceeds open amount

Diagnosis
The total of the amount to be billed added to the reset amount is morethan the open amount.

System Response
The system determines the rejected amount by comparing the open amount,amount to be billed, and the amount reset. In the current instance, theresulting rejected amount is negative.
INCLUDE NA_ALLG_VERARBEITUNG OBJECT DOKU ID TX