SAP ABAP Class CL_WER_ELEMENT_TYPE_SELECTION (To select a single element type) is using

• Class (55)
• Data Element (7)
• Table/Structure Field (9)
• Function Module (3)
• Interface (1)
• Message Class (3)
• Message Number (7)
• Class Method (45)
• Table (9)

#	Object Type	Object Name	Object Description	Note
1	Message Number	WER_UI - 001	Please select one field
2	Message Number	WER_UI - 002	Please select only one field
3	Message Number	WER_UI - 033	Fatal error displaying the Item field selector
4	Message Number	WER_UI - 041	Please select an action type
5	Message Number	WER_UI - 041	Please select an action type
6	Message Number	WER_UI - 042	Please select an expression type
7	Message Number	WER_UI - 042	Please select an expression type