SAP ABAP Function Module FDT_F4_MSG (FM for messages / msg_class F4 help) is used by

• Class (4)
• Function Module (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_FDT_ACTN_MESSAGE Method: CHECK_MESSAGES_SIMPLE	FDT: Abstract Message Action	SFDT_CORE	BASIS	SAP_BASIS
2	Class	CL_FDT_ACTN_MESSAGE Method: CHECK_MESSAGES	FDT: Abstract Message Action	SFDT_CORE	BASIS	SAP_BASIS
3	Class	CL_FDT_WD_RENDER_ACT_MSG_LOG Method: ADD_UI_ELEMENTS_FOR_MSG_LINES	FDT WD: Service for rendering the message log action	SFDT_WD_SERVICE	BASIS	SAP_BASIS
4	Class	CL_FDT_WD_RENDER_ACT_MSG_LOG Method: ADD_UI_ELEMENTS_FOR_MSG_DTLS	FDT WD: Service for rendering the message log action	SFDT_WD_SERVICE	BASIS	SAP_BASIS