SAP ABAP Message Number SWN - 155 (SWN) is used by

• Class (4)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_GRPC_NOTIF_WORKFLOW Method: ADD_LINK_ACTION_EXECUTE	GRPC Notification for Escalation	GRPC_WORKFLOW	GRFD_MAIN	GRCFND_A
2	Class	CL_GRPC_POWL_WF_DETAIL Method: UPDATE_EXECUTE_LINK	Model Class for WDK_POWL_WF_DETAIL	GRPC_WORKFLOW	GRFD_MAIN	GRCFND_A
3	Class	CL_SWN_NOTIF_WORKFLOW Method: ADD_LINKS_ACTION	WF Notif: Handler for Workflow Notifications	SWN	BASIS	SAP_BASIS
4	Class	CL_SWN_NOTIF_WORKFLOW Method: ADD_LINK_ACTION_EXECUTE	WF Notif: Handler for Workflow Notifications	SWN	BASIS	SAP_BASIS