In this transaction you could see the fields which will be updated based on the scenario which you will choose. On few occasions, SAP will prompt you that you should not change the pre-delivered scenarios.
IMG Path: Financial Accounting (New) -> Financial Accounting Global Settings (New) -> Ledgers -> Fields -> Display Scenarios for General Ledger Accounting
Tables: FAGL_SCENARIO, FAGL_SCENARIOT, FAGL_SCEN_FIELDS
On opening the transaction there are two warnings.
When you highlight a scenario and click on “Scenario Fields” you will see the fields which will be updated and within which interfaces.