Regarding the Webhook

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Is it possible to customize webhook event? Please find the image. There is no event as when build fails.

I have integrated Gitlab with JIRA and trying to raise issue automatically when build fails in Gitlab? Is it possible to customized webhook event ? If yes, then how can we customize?
If no, then is there any other option to raise issue automatically in JIRA when build fails in Gitlab?
Kindly let me know.

I am not aware of any option that will fit your need. Mostly because the workflow is usually done the other way. You have bug/feature in Jira issue and you do code changes to implement whats in the Jira issue. I don’t see why you need Jira issue for each pipeline failure. That’s what developer should handle and get notified about.