Hi!
I have not tested discord webhooks with Zammad yet, but I remember that Discord has some special requirements, like e.g. the Github webhook requires you to add /github to your webhook link according to the documentation
https://support.discord.com/hc/en-us/articles/228383668-Intro-to-Webhooks
After that you have to format the webhook correctly. I do not see an option in Zammad to set the Content type of the webhook e.g. to application/json
As I can see in this thread a custom middleware might be a solution to get the webhook payload from Zammad and then forward it to the Discord channel
Sourcecode here:
Let me know if this brings you on the right path.
Best,
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