SAP ABAP Message Class JA (Central error messages, project system) is used by

• Class (5)
• Function Module (17)
• Program (50)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Class	CL_R3_OLR3_NETACTMLST Method: IF_OLR3_PROXY~CHECK_CONSISTENCY	Object Link R3, WBS Element Milestone	R3_OBJECTLINK_R3	PI_APPL	SAP_APPL
2	Class	CL_R3_OLR3_NETWORK Method: IF_OLR3_PROXY~CHECK_CONSISTENCY	Object Link R3, Network	R3_OBJECTLINK_R3	PI_APPL	SAP_APPL
3	Class	CL_R3_OLR3_NETWORKACTIVITY Method: IF_OLR3_PROXY~CHECK_CONSISTENCY	Object Link R3, Network Activity/Element	R3_OBJECTLINK_R3	PI_APPL	SAP_APPL
4	Class	CL_R3_OLR3_PROJECTDEFINITION Method: IF_OLR3_PROXY~CHECK_CONSISTENCY	Object Link R3, Project Definition	R3_OBJECTLINK_R3	PI_APPL	SAP_APPL
5	Class	CL_R3_OLR3_WBSELEMENT Method: IF_OLR3_PROXY~CHECK_CONSISTENCY	Object Link R3, PSP Element	R3_OBJECTLINK_R3	PI_APPL	SAP_APPL