Message Number list used by SAP ABAP Class /MRSS/CL_SNO_EXTBL_SN (Checks for Notifications and Their Assignments)
SAP ABAP Class /MRSS/CL_SNO_EXTBL_SN (Checks for Notifications and Their Assignments) is using
# Object Type Object Name Object Description Note
     
1 Message Number  /MRSS/SGE - 257 This function is not supported
2 Message Number  /MRSS/SGE - 441 Cannot create additional assignment; demand already has &1 assignments