Acc. det. for transfer of CO post. into FI (transaction OK17) obsolete

What causes this issue?

The account determination for transfer of CO postings into FI
(transaction OK17) is not called anymore.

System Response

In S/4HANA Accounting and Controlling are based on the same table ACDOCA
(instead of separate tables like COEP and FAGLFLEXA/BSEG). It is
therefore not possible to change the G/L accounts in FI only: The
accounts in Controlling and Accounting documents are per definition
identical.
The possibility to use the account determination for changing the G/L
accounts for a CO posting is obsolete. The account determination is not
called anymore.

How to fix this error?

Use transaction OK17 to delete the account determination entries for
transaction key 'CO1' with values for debit and credit account.

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.