Summary

Trying to remove groups from users in JIRA through the rest API /rest/api/2/group/user endpoint results in the following error "Cannot edit group memberships, as external user management is enabled, please contact your JIRA administrators."

Environment

JIRA v1001.0.0-SNAPSHOT

How to reproduce

1. Make a REST call to remove a group from a user

   curl -D- -b cookie.txt -X DELETE https://example123.atlassian.net/rest/api/2/group/user?groupname=jira-software-users&username=admin
   

2. Receive a 400 response code and an error message "Cannot edit group memberships, as external user management is enabled, please contact your JIRA administrators."

Expected Result

A 200 OK response code and the group being removed from the target user.

Actual Result

{"errorMessages":["Cannot edit group memberships, as external user management is enabled, please contact your JIRA administrators."],"errors":{}}

Note

This affects add user to groups too: POST /rest/api/2/group/user

Workaround

Adding/Removing the group through the UI works fine.