JBEAP-4530 , BroadcastGroupDefinition.CONNECTOR_REFS needs to changed as
which makes connector is a required field in BroadcastGroup add dialog. however, if a new required field is added, the add dialog only shows the required field Name and Connectors to user. see attached file missing_attributes.png
It should be something like attached full_attribtues.png which also allows to input other optional fields when Connectors is marked required.