How do I move next-gen issues to an Epic via Rest API?

[jiratickets]

I get this error everytime I try to move an issue to an EPIC via a POST Rest API. I wasn't aware about the fact that it was a next-gen issue until I saw this error message. Now that I know, what should I do to eliminate this error?

The error message is provided below:

"errorMessages":["The request contains a next-gen issue. This operation can't add next-gen issues to epics. To add a next-gen issue to an epic, use the Edit issue operation and set the parent property (i.e., '\"parent\":{\"key\":\"PROJ-123\"}' where \"PROJ-123\" has an issue type at level one of the issue type hierarchy). See <a href=\"https://developer.atlassian.com/cloud/jira/platform/rest/v2/\"> developer.atlassian.com </a> for more details."],"errors":{}}

[Trudy Claspill]

Hello @jiratickets 

Welcome to the Atlassian community.

You need to use a different API endpoint, just as the message says.

Are you unclear about using the Edit operation?

[jiratickets]

Hi Trudy, 

Yes, I am a bit unclear on the Edit operation. I am using JIRA APIs to create jira issues with attachments. But, now that I need to link it to an existing EPIC, I get this issue. 
What do you mean by I need to use a different API endpoint? Could you please explain?

Thank you :)

[Trudy Claspill]

Refer to the documentation for the Edit Issue endpoint here:

https://developer.atlassian.com/cloud/jira/platform/rest/v2/api-group-issues/#api-rest-api-2-issue-issueidorkey-put

[Trudy Claspill]

Hello @jiratickets 

Were you able to resolve your issue with the answers I provided, or do you still have questions on this topic?