If you’re using a Tier-2 sandbox or production environment that has application version 8.1.2.x or later, you must initialize Commerce Scale Unit before you can use retail channel functionality for point of sale (POS) operations that use Retail Server in the cloud. Initialization will deploy a Commerce Scale Unit (cloud).
Deploy a Tier-2 sandbox or production environment that has application version 8.1.2.x or later.
Initialize Commerce Scale Unit as part of a new environment deployment
Make sure the headquarters environment is available and not in Maintenance mode.
In LCS, on the environment details page, Click on Manage.
Click on initialize
Select your region
Inside HQ, go to channel Database new channel DB created. Add channels inside that new Channel DB.
Go to channel, click on channel profile and select that new channel DB.
Run 9999 jobs from channel Database.
I hope this helps!