# SCIM troubleshooting
Use this guide to troubleshoot errors that occur when using System for Cross-domain Identity Management (SCIM) provisioning in Workato.
# UserName has already been taken error
You may encounter the userName has already been taken
error message when you enable SCIM provisioning for a user. This happens because the user was already registered on the workspace with a different method, or the user exists on the platform, but confirmation of the invitation is required.
Follow these troubleshooting methods to resolve the issue:
1
Remove the collaborator from the workspace.
2
Enable SCIM provisioning again.
3
Wait until the user accepts the SCIM invitation.
4
Confirm that the user was added and has access to the workspace.
Last updated: 7/31/2025, 8:38:19 PM