Functional area is not filled in derived budget address

What causes this issue?

The functional area in the derived budget address contains no value. The
functional area is mandatory for budgeting in FM area &V2&.

System Response

Processing stopped.

How to fix this error?

Check the derivation strategy &V1& used for deriving the account
assignment of the budget address for FM area and fiscal year in IMG
activity <DS:SIMG._ISPSFM_N_DERIVE_BO>Define Derivation Strategy for
Budget Addresses</>.

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.