The NAS_TRANSACTION_LOG table in the database records all of the transactions that happen to alarms.?If an alarm has had more than one transaction/action happen to it, then it would naturally appear multiple times in this table, thus, this accounts for the duplicate nimids you?re seeing.?
This does not mean that multiple alarms have the same NIMID, but rather that an alarm has had multiple transactions logged against it. This will be the case regardless of suppression.