SAP ABAP Message Number WUF - 016 (WUF) is used by

• Class (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_WUF_CHECK_FIELD_AND_FIXED	Check Structure, Field Name and Fixed Value	WUF_PERS	APPL	SAP_APPL
2	Class	CL_WUF_CHECK_PARA_FIELD	Check if Method Parameters and Structure Field Match	WUF_PERS	APPL	SAP_APPL