2518535 - Error SFIN_FI004 when execute T-code: FAGL_GINS

In your S/4 HANA system, you are going to add customer fields to FAGLFLEXT. When you execute T-code: FAGL_GINS, the error of SFIN_FI004 occurs, the transaction code cannot be used.

Function is not available
Message no. SFIN_FI004
Diagnosis
You are trying to use a function that is not available in SAP S/4HANA Finance.
System Response
This function cannot be executed.

SAP enhancement package for SAP ERP, version for SAP HANA

S/4H, S/4 HANA, S4CORE, S4 HANA, coding block, custom-fields, FAGLFLEXT, ACDOCA, SFIN_FI 004 , KBA , fagl_gins , FI-GL-GL , Basic Functions , FI-GL-IS , Information System , AC-COB , Coding Block , Problem