SAP ABAP Class CX_SALV_ILLEGAL_KEY_FIELDS (illegal definition of key fields) is using

• Class (5)
• Data Element (3)
• Interface (2)
• Message Class (1)
• Message Number (2)
• Class Method (1)
• Table (2)

#	Object Type	Object Name	Object Description	Note
1	Message Class	SALV_X_API	Messages for ALV API exceptions