3811107 - Error FC370 “Enter an existing functional area” although Functional Area exists in configuration

Functional Area exists in Define Functional Area and may appear in value help, but manual entry or automatic derivation fails with FC370.

SAP S/4HANA Cloud Public Edition.

The configured Functional Area key contains an invisible/special Unicode character, potentially introduced through copy/paste. The displayed value therefore appears identical to the manually entered value but is technically different.

Recreate the affected Functional Area, manually typing the key rather than copying/pasting it, then update relevant assignments/derivation accordingly.

FC370, functional area, manual entry error, substitution error, value help, F4 help, SSCUI Define Functional Area, invisible Unicode character, validation failure, posting error, general ledger, derivation rule, public cloud , KBA , FI-FIO-GL-TRA-2CL , Transaction Apps (Public Cloud) , Known Error