Error Message :
Deactivation of task 'XXXXXXXXXXX' (RunID 'XXXXXXX') will not be processed. Auto deactivation: never
The above message is displayed multiple times when there is a specific event configured that contains an infinite loop.
This is due to the event repeating itself.
If an attempt is made to cancel the event the following messages appear in the WP log:
U00011178 Event XXXXXXXXXXXXXXXXXX (RunID: 'XXXXXXXXX') was canceled by user 'XXXXXX/XXXXXX’
U00012201 Deactivation of task ‘xxxxxxxxxxxxxxxx’ (RunID 'XXXXXXXX') will not be processed. Auto deactivation: never.
However, due to the infinite loop that is configured into the event, it is not possible to cancel it, and the U00012201 message is written to the WP log each time an attempt is made to cancel the event.