When using Snow License Manager, there may be reasons why you have duplicate computer records with the same Hostname.  If you would like to check for duplicate rows, you can execute the following query in SQL to look for potential duplicates and return some information about them. 

NOTE: The SQL script below selects duplicate rows based on Hostnames.

select 'Duplicates Hostname (SLM)' as QueryTitle, c.CID, c.ClientSiteName, c.ClientVersion, c.Hostname, c.BiosSerialNumber, c.ComputerID as SLMComputerID, c.LastScanDate, c.InfoTransferDate
from SnowLicenseManager.dbo.tblcomputer c
where c.HostName in (select c1.HostName from SnowLicenseManager.dbo.tblComputer c1 group by c1.CID, c1.HostName having count(1) > 1 )
order by c.HostName, c.LastScanDate desc