Hello, @Ejaz Ashraf 

Welcome to the Docusign Community!

There are two primary causes of this error, either an incorrect URI is being passed to Docusign, or a correct URI has not been registered for the integration key.

Read this article to see what to do: https://support.docusign.com/s/articles/Redirect-URI-not-registered?language=en_US&rsc_301#:~:text=There%20are%20two%20primary%20causes,registered%20for%20the%20integration%20key.

I hope that helps.

Alexandre

Thanks @Alexandre.Augusto ,

I appreciate the information and have double-checked both the URI being passed to DocuSign and the registration of that URI for our integration key. Everything seems to be configured correctly.

Here's the interesting part: The redirect issue only occurs on a new user's first attempt at signing a document within our project. Subsequent attempts for that same user work perfectly, redirecting them to the intended URL (https://client-portal-dev.azurewebsites.net/deductions).

Is there anything specific to new user experiences that might be causing this behavior? We're hoping to ensure a smooth experience for all users, especially on their first interaction with DocuSign embedded signing in our project.