No Transaction is associated with event

Error:

The process flow is not triggered for the calendar event , the log file shows the following issue.

ERROR [TestScheduler_Worker-11] Event com.adeptia.indigo.event.eventbroker.EventChannel.publish(EventChannel.java:91) - ||||Implementation|||||prod_oakley|Error in publishing Event[Error in triggering transaction. No Transaction is associated with event: Oakley_end_to_end_dataload_schedule]|

Cause:

1) You haven't associated the event with any Process Flow using Event Registry.

or

2) The calendar Event and Event Registries were created from the different groups.

Solution:

1) Please confirm that you have bound the Event with Process Flow.

2) Please make sure that all the activities are created from same user/group and activated by the admin