Disabling failed booking notifications
There is an email notification that can be configred to be sent when the vehicle auto allocation setting is enabled, and there is no vehicle available when a driver tries to make a booking:
This notification can be turned off via the Sysadmin Menu > Account Settings > Application Settings > Emails > Send failed booking request emails to Pool Admins.
Change the setting to no and save the page and this will stop these notifications being sent.
If you are unable to find an answer to your question in here please log a support request via the Smartrak Service Desk