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.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.