Populating "Issue Links" with a URL from another custom field via Automation

[J Harris]

Hi

When a support ticket has 'custom field A' populated with a URL to another Jira instance, I would like to transfer this URL to the "Issue Links" section via an Automation.

I have tried multiple JSON routes but the automation fails (Error while parsing additional fields. Not valid JSON.). Can anyone help me with the correct JSON please?

Thank you

[John Funk]

Hi J Harris - Welcome to the Atlassian Community!

Can you share the rule that you have so far? And is the URL just a URL with an issue key in it?