This article shows you how to manually set a numeric ticket sequence ID that will start when the next ticket is created. 

Set a new ticket sequence ID

1. From the Admin tab (on the sidebar), click Settings. 

2. Look for Ticket ID Sequence, then click Reset the sequence with a new number.

The Set new sequence start window appears.

3. Enter a new numeric sequence ID, then click Apply.
Note: The new sequence ID number cannot be lower than the current one and will affect all future tickets.

The new ticket sequence ID will be applied when the next ticket is created