VS code with Atlassian MCP Server - error creating issue with custom field

Question

I am new to Agent + MCP, and was stuck in asking VS copilot Agent to create a Jira Test Issue Type with this error message:

"message": "Failed to create issue: Bad Request. {\"errorMessages\":[],\"errors\":{\"customfield_12345\":\"must NOT have additional properties\"}}"I asked the Agent, I google and search the jira api https://developer.atlassian.com/server/jira/platform/jira-rest-api-examples/I tried lots of different input format for the custom field (Select list single option) but all of them fails - e.g. "customFields": {    "customfield_12345": {      "value": "my value"    }  }or"customfield_12345": { "value": "red" }or"customfield_12345": { "id": "11223" }or"customfield_12345": {    "id": "11223",    "value": "my value"  }Wondering if anyone has same issue and if it was resolved, how?  Or it's just a limitation of beta?Thanks alot!

Queenie Ng · Answer

I tried again seems like Atlassian resolved the custom field issue already.  Test created, now trying to do the link..thanks for helping!

John Funk · Answer

Yes, that is helpful clarification. Can you provide the exact scenario/use case (step-by-step is best) and where the current process is breaking down?

Queenie Ng · Answer

Hello!

Sorry about the confusion - to clarify, I am not creating a new Work Type.  Test work type already exists in our Project.

What I wanted to do is using the Agent to create an Issue (type = Test) and relate it to another existing issue (type = Story) using "relates to" or "tests"

However creating test issue a certain custom field is mandatory (customfield_12345) in our project workflow.  I am struggling to find the right format to pass the customfield value.

Hope it clarifies the problem I'm having