SAP ABAP Message Number SCWN - 400 (SCWN) is used by

• Function Module (3)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	SCWB_NOTE_READ	Read Note	SCWN	BASIS	SAP_BASIS
2	Function Module	SCWB_NOTE_WRITE	Read Note	SCWN	BASIS	SAP_BASIS
3	Function Module	SCWN_NOTE_DOWNLOAD	SCWN_NOTE_DOWNLOAD	SCWN	BASIS	SAP_BASIS