# Callback url is mismatch but it is already set for Expo application

**URL:** <https://community.auth0.com/t/callback-url-is-mismatch-but-it-is-already-set-for-expo-application/119648>\
**Category:** Get Help\
**Tags:** login-prompt-new-experience, login-experience\
**Created:** [October 28, 2023, 8:21am UTC](https://community.auth0.com/t/callback-url-is-mismatch-but-it-is-already-set-for-expo-application/119648 "2023-10-28T08:21:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hknkky](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/hknkky/32/48943_2.png) [@hknkky](https://community.auth0.com/u/hknkky)\
**Post date:** [October 28, 2023, 8:21am UTC](https://community.auth0.com/t/callback-url-is-mismatch-but-it-is-already-set-for-expo-application/119648/1 "2023-10-28T08:21:19Z")

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I already set the callback and logout URLs for IOS and Android for my Expo application, but it says it is mismatch, the provided redirect\_url is not in the list of allowed callback URLs.

`com.hknkky.tarifApp.auth0://dev-xxxxxxxxxxxx.us.auth0.com/ios/com.hknkky.tarifApp/callback, com.hknkky.tarifApp.auth0://dev-xxxxxxxxxxxx.us.auth0.com/android/com.hknkky.tarifApp/callback`

any thought?

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**Author:** ![marcelina.barycka](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/marcelina.barycka/32/56162_2.png) [@marcelina.barycka](https://community.auth0.com/u/marcelina.barycka)\
**Post date:** [October 30, 2023, 9:41am UTC](https://community.auth0.com/t/callback-url-is-mismatch-but-it-is-already-set-for-expo-application/119648/2 "2023-10-30T09:41:25Z")

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Hey there @hknkky ,

Are you sure the BUNDLE\_IDENTIFIER and the PACKAGE\_NAME are the same in your app and in atuh0 dashboard → allowed callback URLs?

Potentially, this may be a hint, as here in the topic, your BUNDLE\_IDENTIFIER and PACKAGE\_NAME are getting value:

> com.hknkky.tarifApp

and in your Auth0 dashboard they are set within the allowed callback URLs as

> com.hknkky.tarifApp **FE**

Would adjusting it relevantly help?

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**Author:** ![system](https://global.discourse-cdn.com/auth0/original/3X/b/5/b560f266932fcce5d57f09a6595bd50518cae3f3.jpeg) [@system](https://community.auth0.com/u/system)\
**Post date:** [November 13, 2023, 9:42am UTC](https://community.auth0.com/t/callback-url-is-mismatch-but-it-is-already-set-for-expo-application/119648/3 "2023-11-13T09:42:21Z")

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