Summary
To cancel an entire series click the Cancel button above the series in customer's Work Orders tab.
Key Points
Click the Cancel button above the series in customer's Work Orders tab
Don't delete each individual Work Order
In the customer's Location page, on the Work Orders tab, find the line with the series you want to delete
Click the Cancel button to the right side of that line
Tip The rule is: Cancel a series, delete a work order. If you delete each individual Work Order in a series, the series will still be 'open' and it will append new Work Orders at the end of the series. For example, if the series had Work Orders until June 2021, come July 2021, new work orders will be added to the calendar because the series is still open.
For more information about recovering a Series, see: Series - how to recover a Cancelled series