SAP ABAP Message Number FN - 509 (FN) is used by

• Function Module (4)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	BAPI_AP_ACC_GETCURRENTBALANCE	Vendor Account Closing Balance in Current Fiscal Year	FBK	APPL	SAP_FIN
2	Function Module	BAPI_AP_ACC_GETPERIODBALANCES	Posting Period Balances per Vendor Account in Current Fiscal Year	FBK	APPL	SAP_FIN
3	Function Module	BAPI_AR_ACC_GETCURRENTBALANCE	Closing balance of customer account in current fiscal year	FBD	APPL	SAP_FIN
4	Function Module	BAPI_AR_ACC_GETPERIODBALANCES	Posting period totals per customer account in current fiscal year	FBD	APPL	SAP_FIN