I’m currently trying to implement the new create meta endpoints for Jira 9.
According to the documentation, when you expand “Schema”:
there should be both an expand field as well as a “fields” array available for the endpoint where you don’t specify the issuetype. However it seems this is not what is implemented as the endpoint will return neither of those properties.
It would be handy to have this to analyse all the issue types in a project at once, otherwise I would first have to get a list of all issue types and then query them individually