Postings exist for company code &1 in ledger &2, deletion not possible

What causes this issue?

You are trying to remove company code &V1& from ledger &V2&.

System Response

Since postings exist, this change can lead to inconsistencies:
For examples in some transactions and reports existing postings that
were done for this company code in this ledger will not be displayed any
more.

How to fix this error?

There is the following alternative to removing a company code from a
ledger: If you want to achieve that from a certain year on, future
postings will not be done into this ledger, you can define a
<DS:DE.FAGL_TOYEAR>To Fiscal Year</> in the IMG activity
<DS:SIMG.FINSV_LDGR_DEACT>Deactivate a Ledger for a Company Code</>.
If there are only test postings in your system and if you are willing to
accept the mentioned inconsistencies, you can turn this message into a
warning message:
INCLUDE CUSTOMIZED_MESSAGE_INFO OBJECT DOKU ID TX

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.