[android-components](../index.md) / [mozilla.components.concept.fetch](index.md) / [isClientError](./is-client-error.md)

# isClientError

`val `[`Response`](-response/index.md)`.isClientError: `[`Boolean`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/fetch/src/main/java/mozilla/components/concept/fetch/Response.kt#L137)

Returns true if the response was a client error (status in the range 400-499) or false otherwise.

