Default ledger group for postings in Controlling for comp. code &1 is &2

What causes this issue?

In the customizing activity <DS:SIMG.FINS_CO_DOCT_CC> Default Values for
Postings in Controlling</> for CCode &V1& the ledger group is set to
&V2&.

System Response

In cross company postings system generates company code clearing items
automatically. If you want to use customer accounts or supplier accounts
for this items, the ledger group has to be empty.

How to fix this error?

Check the 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.