SAP ABAP Message Number OO - 104 (OO) is used by

• Class (10)
• Function Module (1)
• Program (14)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	/IWBEP/CL_INTEGRATION_DT_UTIL Method: IS_CLASS_NAME_VALID	Gateway Integration : Design Time Utility	/IWBEP/INT_COMMON	/IWBEP/FRAMEWORK	SAP_GWFND
2	Class	CL_CRM_IC_CLASS_UTIL Method: CHECK_CLASSNAME	For helper methods on classes and interfaces	CRM_IC_FRAMEWORK	WEBCUIF	WEBCUIF
3	Class	CL_ENH_TOOL_CLASS Method: ADD_PRE_METHOD	Enhancement Tool for Classes	SEEF_CLASS_ENHANCEMENT	BASIS	SAP_BASIS
4	Class	CL_ENH_TOOL_CLASS Method: ADD_OWR_METHOD	Enhancement Tool for Classes	SEEF_CLASS_ENHANCEMENT	BASIS	SAP_BASIS
5	Class	CL_ENH_TOOL_CLASS Method: ADD_POST_METHOD	Enhancement Tool for Classes	SEEF_CLASS_ENHANCEMENT	BASIS	SAP_BASIS
6	Class	CL_OO_ABSTRACT_CLASS_TOOL Method: CHECK_CLIFNAME	Abstract Class Tool	SEOE	BASIS	SAP_BASIS
7	Class	CL_OO_ADT_CHECK_CLIFNAME Method: CHECK_CLIFNAME	Checks the Name of a class or interface	SEO_ADT	BASIS	SAP_BASIS
8	Class	CL_OO_ADT_CHECK_SERVICE Method: CHECK_CLIFNAME	Checks the Name of a class or interface	SEO_ADT	BASIS	SAP_BASIS
9	Class	CL_OO_ADT_CLIF_CHECK Method: CHECK_CLIFNAME	Class/Interface validation	SEO_ADT	BASIS	SAP_BASIS
10	Class	CL_OO_CLASS_BUILDER Method: IF_WB_PROGRAM~PROCESS_WB_REQUEST	Class Builder	SEOE	BASIS	SAP_BASIS