Every reservation you create in Lemax has its own unique number called Reservaton number. When you create a new reservation, it gets its reservation number automatically and you can not change it.

Usually, reservation numbers are in sequence, but sometimes it seems that some numbers “are missing” and the reservations are not in sequence. Do not be afraid, due to specific programming and database rules it may seem some numbers are skipped, but what is important is that every reservation number is unique and that every new reservation has reservation number bigger than the reservation before.

When server is restarted Microsoft SQL Server 2012 (one that we are using on our servers) clears it’s cache and sometimes skips some of the numbers in column identities:
https://connect.microsoft.com/SQLServer/feedback/details/739013/failover-or-restart-results-in-reseed-of-identity
http://stackoverflow.com/questions/14146148/identity-increment-is-jumping-in-sql-server-database