Please assign company codes to ledgers

What causes this issue?

No company code has been assigned to any ledger.

System Response

The consistency of the customizing settings in General Ledger can't be
checked because of the missing assignment of company codes to ledgers.

How to fix this error?

In case this system is a new installation, you probably didn't copy the
SAP standard customizing from client 000 into the current client. Please
copy the content of customizing table FINSC_LD_CMP from client 000.
In case you are migrating to S/4HANA, the migration is not complete.
Please make sure to do
<DS:SIMG.FINS_MIG_LEDGER_CUST>migration of the ledger settings in the
General Ledger</>.

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.