Unable to create New Sandbox Environment: "At least 1GB capacity required"? After adding Power Apps Subscription
I am trying to create a new Environment to build a power app. I have a new Office 365 Business Premium account for a new company with 4 users. I got my licenses in April 2020 (a few weeks ago). I had the same problem I've seen in other posts where I get a message "At least 1GB capacity required". I added Power App Licenses (the 6 month free trial licenses) and got 1000 of them. This did not increase my CDS as it did for other users who reported that they got 10GB. I got none. Then I added per app Power App license and only got 50MB. Still cannot add an environment.
Based on the issue you mentioned, you want to create a Sandbox environment with the current license.
Look at the picture shown above, your current Per App Plan is simply not enough. So if you’re using just the Per App Plans, you at least need around 20 licenses to create a database for a sandbox environment as 20 licenses × 50 MB is around 1 GB required CDS storage.
In a word, no matter what type of environment, you need to consume at least 1GB of capacity.
If you have to create an app in PowerApps, purchase more licenses.