When I go to the "Delivery" section of an issue and attempt to create an Epic within a project I get the error: "We failed to create the issue given the available data". I have tried creating the issue (Epic) in several different projects. The workaround is to create the Epic within a project and then go back to the JPD project and link to that issue. Any ideas why the "Create" button from within the "Delivery" section of the JPD project isn't working for me?
Thanks for the feedback (Hugo Emond as well). It was a mandatory field. Making it optional corrected my issue.
I have experienced the same issue and the reason was that we had a mandatory field in the other project causing the creation to fail (as only the Summary is provided in JPD). Making the field optional solved the issue.