Message Number list used by SAP ABAP Program LK23F_CUSTF13 (Form CHECK_SEND_REC_FIELDS)
SAP ABAP Program LK23F_CUSTF13 (Form CHECK_SEND_REC_FIELDS) is using
# Object Type Object Name Object Description Note
     
1 Message Number  BKN - 500 Select at least one sender
2 Message Number  BKN - 501 Select at least one receiver
3 Message Number  BKN - 502 Select a cost center and an activity type as sender objects
4 Message Number  BKN - 517 Also select cost center as receiver