&1 must be defined as a key column
Message type: E = Error
Message class: PSZ1 - PS Payment Planning: Function Group KPP_PSZ
Message number: 019
Message text: &1 must be defined as a key column
What causes this issue?
You have not defined &V1& as key column.
System Response
The layout cannot be saved.
How to fix this error?
Define &V1& as the key column.
Procedure for System Administrators
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.