I am using URLSessionConfiguration.background and uploadTask to upload a file from an iOS app. request.httpMethod = "POST" request.setValue("application/octect-stream", forHTTPHeaderField: "Content-Type") let task = uploadURLSession.uploadTask(with: request, fromFile: fileURL) I'd like to understand how to manage the error handling. How the http errors 4xx or 5xx are handled by the URLSession.uploadTask?

I am using the xcodebuild for creating a package for publishing The app bundle contains: the iOS app itself, the push notification extension, the watchos app with its extension. The watchOS app is using the healthkit for retrieving heart rate data. xcodebuild archive -configuration Release -workspace $(system.defaultworkingdirectory)/MyApp/MyApp.xcworkspace -scheme MyApp -archivePath $(system.defaultworkingdirectory)/MyAppArchive CODE_SIGNING_ALLOWED=NO xcodebuild -exportArchive -archivePath $(system.defaultworkingdirectory)/MyAppArchive.xcarchive -exportPath $(system.defaultworkingdirectory)/Final -exportOptionsPlist $(system.defaultworkingdirectory)/MyApp/ExportOptions.plist The ExportOptions.plist contains the info for signing the app <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>provisioningProfiles</key> <dict> <key>fit.myapp.watchkitapp.watchkitextension</key> <string>ProvisioningProfileGUID1</string> <key>fit.myapp.watchkitapp</key> <string>ProvisioningProfileGUID2</string> <key>fit.myapp.notification</key> <string>ProvisioningProfileGUID3</string> <key>fit.myapp</key> <string>ProvisioningProfileGUID4</string> </dict> <key>signingCertificate</key> <string>Apple Distribution: MY COMPANY</string> <key>signingStyle</key> <string>manual</string> <key>method</key> <string>app-store</string> <key>teamID</key> <string>MYTEAMID</string> <key>uploadBitcode</key> <false/> </dict> </plist> The ipa file is successfully created but when the ipa file is uploaded (by Transporter app) the package analysis fails with the following errors: Asset validation failed (90701) Missing entitlement. watchOS app bundle 'MyApp.app/Watch/MyAppWatch.app/PlugIns/MyAppWatch Extension.appex' uses 'UIBackgroundModes' value 'workout-processing' without the required entitlement 'com.apple.developer.healthkit' signed into the bundle. (ID: cc87a6cd-2084-4712-9f45-b22b35e9574a) Asset validation failed (90334) Invalid Code Signature Identifier. The identifier "com.apple.WK" in your code signature for "MyAppWatch" must match its Bundle Identifier "fit.myapp.watchkitapp" (ID: bb9a56d3-949c-4b49-ad86-3cf7a26a91a2) Extra note: If the build has performed directly in Xcode/Organizer then the issue is not present. What am I missing? How can I debug this kind of issues?