Hi Vanessa - Welcome to the Atlassian Community!
In Jira Cloud, you cannot make a field mandatory based on the value of another field or linkage. You could make it mandatory as you transition an issue from one status to another using a third party add-on such as JMWE or ScriptRunner.
Jira is a powerful tool that helps teams to plan, manage, and report on their work. We love using Jira, especially for its ability to track issue progress. But how to monitor the...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events