Hi Eduardo, Master should populate the domain_id for a user before it gets to the sql layer  . Do you have `[identity] default_domain_id` specified in your keystone.conf? Can you give some specifics on the upgrade scenario? Number of nodes? Specific request you're making to create users?
Hi. I’m testing upgrades from Newton to master branch using keystone’s zero-downtime upgrade method: keystone-manage db_sync --expand keystone-manage db_sync --migrate keystone-manage db_sync --contract After upgrade is made with no errors in logs, I cannot create users. Other keystone commands