Posting ledger &1 not supported in BCS budgeting

What causes this issue?

The FM update profile assigns the posting ledger &V1& to a
commitment/actual data record. This posting ledger, however, is not
supported in BCS budgeting, since the budget category (for this budget
ledger) &V2& linked to posting ledger &V1& is not active in FM area &V3&
.

System Response

Processing of the commitment/actual data record stops.

How to fix this error?

Change the Customizing settings for the budget category &V2& in the IMG
activity <DS:SIMG._ISPSFM_N_V_FMBUDCAT>Choose Budget Category</>.

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.