Duplicate Key error

I am getting a Duplicate Key error when I try to download the Multiplayer Technical Preview. (I covered the last digits of the code for security purposes.)

> HALO INFINITE MULTIPLAYER TECHNICAL PREVIEW
> INCOMING CORRESPONDENCE
> We’re excited to invite you to participate in a Halo Infinite multiplayer technical preview this weekend and next! During this weekend, September 23-26, our goals will be to test our services and systems at scale, gather data on a breadth of real-world hardware configurations, and obtain feedback on Arena, Training Mode, as well as the new Halo Waypoint web and app experiences. Next weekend, September 30 - October 3, Big Team Battle will go live and take it up a notch.
>
> On Sunday, October 3, we will be sending out a survey to a portion of Halo Insiders to collect feedback on the flight. Please keep an eye out for it, as it’s valuable to get your thoughts and feedback while everything is still fresh in your mind. Additionally, official feedback threads can be found in the forums here on Halo Waypoint.
>
> During this flight, we’ll also be leveraging the Halo Insider Support site to provide all the information and additional resources you may need for this flight.
>
> READY UP
> To download and securely install the flight build, please follow the steps in the Installing on Steam article on the Halo Insider Support site. To help us find issues ahead of launch, please ensure your PC is set to report “Optional diagnostic data” in your computer’s Diagnostic & feedback settings.
>
> - To activate the Steam build on your Steam account, please use this key: E4JMA-MALIV-XXXXXAfter your installation has completed, please launch the build and verify that you can get in successfully. Please make sure you are only signed in with the invited Gamertag account when launching the game.

343 are aware of issues with duplicate/invalid Steam keys and will be addressing this.

Please see my post here and follow that thread for further updates:
https://www.halowaypoint.com/en-us/forums/243780d3b80b4bb6ac7917a8942286db/topics/psa-halo-technical-preview-2-updates/511173a1-85aa-4941-b02f-12645a4917ea/posts?page=1#post6

<mark>For anyone dealing with the duplicate/invalid Steam code issue - please file a support ticket on the Insider Support Site:</mark>
https://insidersupport.halowaypoint.com/hc/en-us