---
title: Known issues and limitations
description: Known Limitations
component: zendesk
page_id: zendesk:release_notes:pf_zendesk_connector_known_issues_and_limitations
canonical_url: https://docs.pingidentity.com/integrations/zendesk/release_notes/pf_zendesk_connector_known_issues_and_limitations.html
revdate: June 17, 2024
---

# Known issues and limitations

**Known Limitations**

* Because of a limitation with PingFederate 8.1 and earlier versions, when configuring two service provider (SP) connections with the same provisioner, the second connection built can be pre-populated with the channel from the first connection. To avoid conflicts, delete this pre-populated channel and create a unique channel for each connection.

* Single logout (SLO) is not supported.

* User attributes cannot be cleared once set, they can only be updated.

* Emails that contain plus (+) symbols are not supported and may cause issues with provisioning.

* Syncing with existing groups is not supported. The connector is not able to manage groups, or add users to groups that it has not created.

* There is the potential to have a user in Zendesk managed by two users in Active Directory. This occurs when a new user is created with the secondary email of another user.