If I want Field A (a Text Field multi-line text field) to be required only if Field B ( a Select List single choice custom field) = Yes for a particular transition how would I go about that?
Add Validator To Transition - Scripted (Groovy) Validator (JMWE add-on)
if (issue.get("FieldB").name == "Yes")
else (issue.field[FieldA].required)