Message Class list used by SAP ABAP Program WDK_EASY_SCRIPT (WDK easy script creation)
SAP ABAP Program WDK_EASY_SCRIPT (WDK easy script creation) is using
# Object Type Object Name Object Description Note
     
1 Message Class  00 General Basis texts
2 Message Class  01 General Basis, e.g. user and authorization maintenance
3 Message Class  CX_WDK_CONTROLLER FP/BE/BDC Controller Messages
4 Message Class  MS SAP customer enhancement project messages
5 Message Class  SV View Maintenance: Customize Messages