Unable to transition a subtask to canceled

[David Whitlock]

I am trying to use the API  end point rest/api/2/issue/<key>/transitions to transition a subtask to canceled. I am posting the request message as  

{"update": {"comment": [{"add": {"body": "Resolved via automated process."}}]},"transition": {"id": "791"},"fields": {"resolution": {"name": "Canceled"}}}

I was able to pull the transition id from my workflow in Issues -> Workflow

when I execute the following endpoint I get the following error: 500
{"errorMessages":["Internal server error"],"errors":{}}

Any help would be great

[Radek Dostál · Accepted solution]

500 internal error generally means something unexpected happened, do you have access to the logs?
Would be interested in seeing what {{ jira_home }}/log/atlassian-jira.log has to say when you try to do the transition, it should say more on what specifically was the problem.

Looking at https://docs.atlassian.com/software/jira/docs/api/REST/9.6.0/#api/2/issue-doTransition it says 500 when transition ID is incorrect, are you absolutely certain the id is right?

[David Whitlock]

Thanks for the response. I do believe I have the correct id, here is where I found it

[David Whitlock]

I realized I was referencing the wrong workflow. Once I add the correct id, I no longer got this error.