Input data incomplete

What causes this issue?

To determine a payment plan amount, the system requires at least the
contract number and the
<DS:GLOS.CE3D29A77D72D411BA570800060D888B>payment plan category</>.

System Response

INCLUDE ISU_VERARB OBJECT DOKU ID TX

How to fix this error?

In the dialog:
Enter the necessary parameters.
For the background process or mass processing:
Contact SAP.

Error message extract from SAP system. Copyright SAP SE.