# Mobile SDK errors

> Every error code of the iOS, Android, React Native and Flutter SDKs, what causes it and how to fix it.

Source: https://docs.tryyoursize.com/mobile/errors/

The mobile SDKs raise errors with the same stable codes on every platform: `TryYourSizeError` (Swift, `code.rawValue`), `TryYourSizeException` (Kotlin, `code.wire`; Dart, `code`) and, in React Native, `loaderror` events with `code`. Each error's `docURL` / `docUrl` points at the matching section below.

## secret_key_in_app

A secret (`sk_…`) or restricted (`rk_…`) key was passed to the app. Apps are public: anyone can extract a key from them. Use your **publishable** key and [roll the secret key](https://docs.tryyoursize.com/get-started/keys-and-modes.md) if a build shipped with it.

## invalid_key

Not a publishable key: expected `pk_test_…` or `pk_live_…`.

## invalid_app_identifier

The bundle identifier (iOS) or package name (Android) cannot be used as an app origin. It must be reverse DNS, for example `com.brand.shop`. Set `bundleIdentifier` / `packageName` in the configuration if your build uses an unusual identifier.

## invalid_option

An option is invalid: `product` must be 1–120 characters; `embedOrigin` must be `https` (`http` only for `localhost`).

## window_unreachable

Our window did not answer: the device is offline, or a network filter blocks `embed.tryyoursize.com`. The sheet shows the shopper a short note in their language; your app gets the error with `loadError`.

## app_not_allowed

This app is not registered for the key's store. In Studio, add `ios-app://<bundle id>` or `android-app://<package>` (lower case) to the allowed sites for **test mode**. Live mode for apps is coming soon.

## sign_in_cancelled

The shopper closed sign-in before finishing. Nothing to do.

## sign_in_unavailable

Sign-in through the system browser is not available yet; shoppers sign in inside the window (email and a code), which works today.