I'm successfully creating the AAR file on my system: Manifest file: { "assetPackID": "my-ba", "downloadPolicy": { "essential": { "installationEventTypes": [ "firstInstallation", "subsequentUpdate" ] } }, "fileSelectors": [ { "file": "file1.bin" }, { "file": "file2.bin" } ], "platforms": [ "iOS" ] } Command: xcrun /Applications/Xcode-beta.app/Contents/Developer/usr/bin/ba-package my-ba.json -o my-ba.aar I'm using Transporter on my Sequoia 15.6 system - when I'm uploading the AAR file, I'm getting the following error: ITMS-91140: Invalid manifest file. Invalid manifest file. Your asset pack’s manifest file can’t be verified. Make sure it follows the manifest template, then upload again. Full Debug Log: full-transporter-output.txt