No valid Identification Category exists for Identification Type &1

What causes this issue?

Every identification must be assigned to a valid identification
category. Identification type &V1& is not assigned to a valid or
existing identification category.

System Response

This is an inconsistency in system customizing. Therefore<(>,<)> the
processing of the current consolidation step has to be aborted.

How to fix this error?

Adjust identification number customizing or source data according
identification number customizing.

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.