Message Number list used by SAP ABAP Class CL_RSRV_MDATA_VALS (Unauthorized Characters in Characteristic Values)
SAP ABAP Class CL_RSRV_MDATA_VALS (Unauthorized Characters in Characteristic Values) is using
# Object Type Object Name Object Description Note
     
1 Message Number  RSRV - 163 Internal error. Contact SAP
2 Message Number  RSRV - 175 Characters not allowed in characteristic values (characteristic &1)