SAP ABAP Program LWSTN1F02 (Error handling) is using

• Data Element (2)
• Table/Structure Field (21)
• Function Module (1)
• Table (3)

#	Object Type	Object Name	Object Description	Note
1	Table	BAPIRETURN1	Return Parameter
2	Table	MERRDAT	DI: Structure for Returning Error Messages
3	Table	SMESG	Message collector