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Integration of Apex 24.2 with Fusion SSO setup - invalid_redirect_uri Error

Arun N-OCJun 29 2025

Hi,

I am trying to establish the connectivity between Apex and Fusion. We have the FA instance in a separate tenancy than the PaaS tenancy where ADB's (and Apex) are hosted.

The Apex DB connection is setup fine with SSO walltet and validated. Using the “Integrate Apex with Fusion Applications” the remaining steps of database credentials, synomyms etc are successful.

The Apex starter app is created and when i do Run application get the following message instead of the Fusion Login page.

Please could you advise what is missing and how to troubleshoot and fix the issue.

{
"error": "invalid_redirect_uri",
"error_description": "Client <clientid> requested an invalid redirect URL: https://<apex_host>/ords/apex_authentication.callback. ECID: UEfuC1oI310000000"
}

Thanks,

Arun

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Added on Jun 29 2025
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