This value, of syntax IEEE8021SpbmSPsourceId and accessible only via notification, carries the specific Shortest Path Source Identifier that is in conflict, as reported in the h3cSpbSPSourceConflictTrap alongside h3cSpbConflictSysID. Admins use it to know exactly which SPSourceID value collided between two bridges in the SPB topology, since SPSourceIDs must be unique for shortest-path tree computation to work correctly. For example, an admin receiving this trap would reconfigure one of the two bridges to use a different, non-conflicting SPSourceID value.