[API] Filtering issues to get only those without milestone

Hi,

from the UI you can get the list of issues that are not assigned to a milestone yet, the query parameter in the URL is “No+Milestone”. From the API however, there is a query parameter “milestone” which take the milestone title, but the documentation says nothing about filtering those without milestone. I tried to mimic the UI and tested “No+Milestone” with no luck.

Is there a query param that I’m missing or is that just the API does no allow that filter ?