If you have duplicate bookings in your diary this may not be an error with Access Collins, or it could be that your customers are making multiple bookings.
Check the history tab for the booking you will be able to see when the booking was made.
If the bookings were made at different times, then it would be worth checking the booking journey to see if you can identify any issues that may be causing the customer to book twice.
If, after checking this, you find that the bookings have been made at the same time and there is no reason for your guests to have booked twice, reach out to us and include the DMN booking references that are impacted by this issue.