API error response unspecific

Technical assistance
1

I encountered this while creating a workflow using n8n and zammad API node.
Everything else in my workflow works fine but when the AI agent tries to create a user with an email address that the system already has, it receives a very unspecific response and gets confused.

Infos:

  • Used Zammad version: 6.5.1
  • Used Zammad installation type: docker-compose
  • Operating system: debian

Expected behavior:

  • API to return message: “user already exists”

Actual behavior:

  • API returns “Your request is invalid or could not be processed by the service”

Steps to reproduce the behavior:

  • Create a workflow in n8n and use the zammad API node to create a user with an already registered email address
2

It’s not really assistance that you need, right? You just want the system to change for your workflow to be more precise?

3

That’s correct, unless I’m missing something or doing something wrong and shouldn’t be getting this message back. If so, please let me know.
Otherwise, yes, a more precise response would be much more useful.

4

You’re trying to create a user that already exists and the response by the API is not precise enough?

Zammad by defaults allows unique email addresses.
While you can disable that with a hidden setting, I cannot recommend to do that at all.

The clean way would be:
Check if the user exists and if not create the user.

If you’re in the process of a ticket creation, you may want to use ‘guess’ instead.

5

Got it. I was hoping to do it all in one API call.

Also the response back sounded buggy and I think it can be improved.

I’ll try what you suggested instead. Thanks for the quick responses and tips.