# How to resolve Xcode project compilation failure due to missing development team configuration information? (/en/api-reference/faq/integration/ios_sign)

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When deploying the Xcode project to an iOS device for debugging, the following error occurs:

```text
Error: Signing for "Runner" requires a development team. Select a development team in the Signing & Capabilities editor (in target 'Runner' from project 'Runner').
```

## Reason [#reason]

On the iOS platform, all apps require a developer signature certified by Apple to verify the source and security of the app. If Xcode fails to detect a valid development team or certificate, it will not be able to complete the compilation and deployment of the app.

## Solution [#solution]

Refer to [Apple's official instructions](https://help.apple.com/xcode/mac/current/#/dev60b6fbbc7) to configure a valid development team and certificate.