FA Journal post information to FA Ledger Entries only.
FA G/L Journal post to both FA Ledger Entries and General Ledger Entries.
Before FA G/L Journal can post to General Ledger Entries, you must enable the integration between Fixed Asset and General Ledger.
To enable the G/L Integration:
1) Open Depreciation Book by clicking on Departments => Administration => Application Setup => Financial Management => Fixed Assets => Depreciation Books. Double click on the Depreciation book that you want to have integration wiht G/L.
2) At the Ingration Tab, enable the activities that you want integration with G/L.