SAP ABAP Message Number WO - 520 (WO) is used by

• Class (1)
• Function Module (4)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_SWF_RDG_DISPATCHER Method: EXECUTE_DIALOG_REQUEST	Workflow: Interaction Dispatcher	SWF_RDG	BASIS	SAP_BASIS