SAP ABAP Message Number BRF - 577 (BRF) is used by

• Class (1)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_EXPRESSION_BASE_MNT_BRF Method: IF_MAINTENANCE_BRF~PAI1	BRF: Basis Class Expressions	SBRF	BASIS	SAP_BASIS