Consolidation group &1: Ledger &2 is to be assigned

What causes this issue?

In accordance with SAP Note 2901554, a unified ledger is to be assigned
to the consolidation groups within a consolidation version. The
assignment of ledger &V4& to consolidation group &V1& violates this
condition because ledger &V2& is already intended for consolidation
version &V3& currently set up.

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?

Assign ledger &V2& to consolidation group &V1&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.