Specified variant &2 is not defined for filter type &1

What causes this issue?

The variants &v2& for filter type &v1& cannot be found.
It could be that the filter report to the filter type was regenerated.
The previous variants could also be lost at the same time.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check your entry and use the selection list if required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.