Message Class list used by SAP ABAP Table TBCF (Form types in Gantt chart)
SAP ABAP Table TBCF (Form types in Gantt chart) is using
# Object Type Object Name Object Description Note
     
1 Message Class  CG VarChart graphic (network, hierarchy, Gantt chart)
2 Message Class  CG VarChart graphic (network, hierarchy, Gantt chart)