You base URL should actually be https://ultidev/- in this case, your REST calls should have a format such as https://ultidev/rest/api-name/api-version/resource-name.
For more information you may refer to the link below:
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot