What this error means
The Xcode project doesn’t say which Apple Developer team signs the app, so Xcode can’t pick a certificate or profile.
Why it happens
Without a Team ID, Xcode has no Apple Developer team to take a certificate and a provisioning profile from.
The message tools print
error: Signing for "App" requires a development team. Select a development team in the Signing & Capabilities editor. (in target 'App' from project 'App')How to fix it
- Set DEVELOPMENT_TEAM to your 10-character Team ID on the App target (Signing & Capabilities in Xcode).
- On CI, pass it to the build — fastlane’s team_id, or DEVELOPMENT_TEAM=… on the xcodebuild command.
Check a log that shows this
Paste the failing step into the build error explainer. It matches this message, and any others in the same log, in your browser. Nothing is uploaded.
Other iOS build errors
- No signing certificate "iOS Distribution" found
- No profiles for your bundle ID were found
- Provisioning profile doesn't support the capability
- Podfile.lock is not in sync with the sandbox
- CocoaPods could not find compatible versions
- PhaseScriptExecution failed with a nonzero exit code
- Undefined symbols for architecture arm64