Welcome to the RingCentral Community

Thanks Curtis. I've reproduced the issue in Sandbox for both API Explorer and via cURL.

Our team is looking into it.

I am now getting a slightly different error - 503 service unavailable.

Easiest way to replicate is via the 'try it out' button, which tests it in sandbox. Here is a snapshot of the page and the request with response.

`GET /scim/v2/Users` is working for me in production both without a filter and with an `emails eq` filter.

Can you provide more information on thee request you are making including:

* production or sandbox
* HTTP method
* request parameters

Thanks