The issue arises when you delete all the agents (and the same for users) and start with an empty list. Below is how fix it:
The first agent you create please remove auto number:
![](https://helpdesk.xcallyusa.com/wp-content/uploads/2021/03/Screen-Shot-2021-03-24-at-4.05.36-PM.png)
You must set a number that cannot be 1000, this number is originally used by the Administrator:
![](https://helpdesk.xcallyusa.com/wp-content/uploads/2021/03/Screen-Shot-2021-03-24-at-4.06.17-PM.png)
After that you can continue adding agents with autonumber on.