The 2021 Super-Regional project, and our participation in the NORCAL MLS ALLIANCE, focused on bridging the gaps with regard to listing data. The primary pain point was the inconsistent methods for submitting and managing a listing in more than one place, which in turn forced Agents to to manage clients in more than one MLS system. 

We have not yet tackled the outstanding issue of full regionalization of the Supra Lockbox and electronic eKey system. Currently, nothing has changed on this front - and there continues to be three distinct regions for Supra functionality. 

This is from the NorCal MLS Alliance website:

There are no changes to the way the lockbox and key system work today. Agents can still use the Supra system and obtain their lockboxes and keys in the same manner they currently utilize (either through the MLSs or the associations that issue keys). Likewise, there is no change to the MLS Rules regarding the use of the lockboxes and keys. The Rules of the entity which issues the key and key code access will prevail.
The map below indicates the Supra Key coverage areas with each color signifying a different key code is required.

So, if you are listing in Marin, you would use the SFARMLS listing input system, but you will still need to use a Lockbox that is purchased for use in the BAREIS listing service area or a box that has been programmed to work in that service area. The same is true for the MetroList area, should you list in Sacramento (or the central valley).

For help with BAREIS counties (Marin, Sonoma, Napa, etc...), please call 800-776-5252.

For help with MetroList counties (Scramento, etc...), please call 916-922-7584.

What is the KIM Supra Group? The KIM Group consists of SFARMLS, BridgeMLS, CCAR, Bay East, and MLSListings. This is why your Supra equipment from San Francisco works in all of these MLS territories. As you can see, BAREIS and MetroList are not yet part of the KIM Group. So remember that if you are working in any of the BAREIS counties you will need to make sure your eKEY is cooperated.