From your description, it has to be realized within the same project.
Not a beautiful solution, but it could work. You have to take the Field Security Plugin. Then you have to declare two groups of fields/custom fields. The one are only readable (Epic) for a specific role(epic writer, defect writer), the others read and writable (Defects). If only one of the readable is mandatory and the user is in the role "defect writer only", then the user cannot create an Epic.
The Jira Marketing team is putting together an ebook on migrating to Data Center. We're looking for pro tips on how you staffed your project team and organized your Proof of Concept. Share yo...
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