Automation populates field value to a different project type

[Yuliia Vyborova]

Hello,

I created an automation that triggers when custom PRD field in Product Discovery updated. Then JQL searches for issues with not empty values. Then I added Branch and selected Destination issue. My question is how to define relationship between Product Discovery Idea ticket and Delivery ticket (see on the screenshot the Idea that has Delivery ticket linked). Once I know how Delivery ticket relationship is defined, I will add the action to update the corresponding ticket in PBMP (Jira Software) project.