Dear Zain ,
You may check the release notes with below link
SAP Solutions > SAP ERP > SAP ERP > Enhancement Package 4
For EhP3 switch FIN_TRM_LR_FI_AN is required.
For EhP4 both switches of business functions FIN_TRM_LR_FI_AN and FIN_TRM_LR_FI_AN_2 are required.
Hope this helps.
Best regards,
Jasmine Li