When trying to use the Slack integration /jira create issue gets created but Slack gets an Oops!

Question

I have integrated Slack with JIRA Service Desk. When I do a /jira create command I fill the form and click create.

I get:

Oops! We tried to create an issue in Jira but weren't able to. Please try again or click the below button to manually create an issue.

but the issue gets created in service desk.

(I have looked for required fields but I cannot find any except issue type)

Lucas Kattis · Accepted Answer

So my issue was with the workflow. There was a post function referring to a custom field that did not exist anymore.