What/Where is the issue ?

// Brief explanation of the issue

Environment: C7/ C8SaaS/ C8SM

Optimize version :
ES version :
OS + Browser version :

Steps to reproduce:

• Preconditions:
  • create event based process model and be in edit mode of this process
• Steps:
  • click Add Event Source button and add events for any selected process and click Add
  • do the same as above for the same process 

Observed behavior:

After adding the event for the same process the second time, we get the error that there is a conflict and the events table is in loading state until we remove the duplicated events.

Expected behavior:

In the event source modal there is a message shown that the event already exists and the Add button is disabled

Additional Information: