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content/developers/apps/troubleshooting-oauth-app-access-token-request-errors.md

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+---
+title: Troubleshooting OAuth App access token request errors
+intro: '{{ site.data.reusables.shortdesc.troubleshooting_access_token_reques_errors_oauth_apps }}'
+redirect_from:
+  - /apps/building-integrations/managing-oauth-apps/troubleshooting-oauth-app-access-token-request-errors/
+  - /apps/managing-oauth-apps/troubleshooting-oauth-app-access-token-request-errors
+versions:
+  free-pro-team: '*'
+  enterprise-server: '*'
+---
+
+{% note %}
+
+**Note:** These examples only show JSON responses.
+
+{% endnote %}
+
+### Incorrect client credentials
+
+If the client\_id and or client\_secret you pass are incorrect you will
+receive this error response.
+
+```json
+{
+  "error": "incorrect_client_credentials",
+  "error_description": "The client_id and/or client_secret passed are incorrect.",
+  "error_uri": "/apps/managing-oauth-apps/troubleshooting-oauth-app-access-token-request-errors/#incorrect-client-credentials"
+}
+```
+
+To solve this error, make sure you have the correct credentials for your {{ site.data.variables.product.prodname_oauth_app }}. Double check the `client_id` and `client_secret` to make sure they are correct and being passed correctly
+to {{ site.data.variables.product.product_name }}.
+
+### Redirect URI mismatch
+
+If you provide a `redirect_uri` that doesn't match what you've registered with your {{ site.data.variables.product.prodname_oauth_app }}, you'll receive this error message:
+
+```json
+{
+  "error": "redirect_uri_mismatch",
+  "error_description": "The redirect_uri MUST match the registered callback URL for this application.",
+  "error_uri": "/apps/managing-oauth-apps/troubleshooting-authorization-request-errors/#redirect-uri-mismatch2"
+}
+```
+
+To correct this error, either provide a `redirect_uri` that matches what
+you registered or leave out this parameter to use the default one
+registered with your application.
+
+### Bad verification code
+
+```json
+{
+  "add_scopes": [
+    "repo"
+  ],
+  "note": "admin script"
+}
+```
+
+If the verification code you pass is incorrect, expired, or doesn't
+match what you received in the first request for authorization you will
+receive this error.
+
+```json
+{
+  "error": "bad_verification_code",
+  "error_description": "The code passed is incorrect or expired.",
+  "error_uri": "/apps/managing-oauth-apps/troubleshooting-oauth-app-access-token-request-errors/#bad-verification-code"
+}
+```
+
+To solve this error, start the [OAuth authorization process again](/apps/building-oauth-apps/authorizing-oauth-apps/)
+and get a new code.