Message Class list used by SAP ABAP Program SDBONTO4 (Update for rebate-relevant data fro release 4.x)
SAP ABAP Program SDBONTO4 (Update for rebate-relevant data fro release 4.x) is using
# Object Type Object Name Object Description Note
     
1 Message Class  VF Billing
2 Message Class  VK Maintenance and processing of conditions