Invalid combination of parameter values &1 &2 &3 &4

What causes this issue?

The system validates incoming XML of electronic fiscal documents for
invalid combination of variables and their values. In case the system
finds incompatible variables and values, the processing of the incoming
XML in the Fiscal Workplace is aborted.
For example, the posting module has been called with
Parameter &V1& &V2& and
Parameter &V3& &V4&
This combination is not possible.

System Response

The system does not proceed with the processing of the incoming XML in
the Fiscal Workplace and displays a message.

How to fix this error?

You should check the code implemented for your company with enhancement
points. Otherwise, contact your system administrator.

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.