Hi, There seems to be some inconsistency around whether Keystone endpoints in the catalog should be versioned or not. Specifically, should they have a /v3 suffix? I did a survey of code using keystone-manage bootstrap via codesearch: * Kolla Ansible: unversioned * DevStack: unversioned * puppet-keystone: unversioned * Keystone install guides: versioned * OSA: unversioned I imagine that when v2 was around, the endpoint needed to be unversioned. But was there a point when it became recommended to add a version? I'm asking because of an issue in horizon when downloading a clouds.yaml file for application credentials. If the auth_url field is unversioned, then some older client libraries will fail with a Not Found error during e.g. openstack server list. I tested using Stein and Train U-C. The former fails, the latter works. If I use Stein U-C, then update keystoneauth1 to 3.17.3 (from Train U-C), it works. Thanks, Mark