Message Number list used by SAP ABAP Function Module MSG_OPEN (MSG_OPEN)
SAP ABAP Function Module MSG_OPEN (MSG_OPEN) is using
# Object Type Object Name Object Description Note
     
1 Message Number  55 - 500 Internal error: application log object &1 is already open
2 Message Number  55 - 501 Internal error: equivalence table SUBS is not correct (&1)
3 Message Number  55 - 502 Internal error: application log is not customized (&1/&2)
4 Message Number  55 - 898 Unexpected ELSE case: field &1 with value &2 (&3 &4)