Hello @chaiashtekar
Welcome to the Auth0 Community!
Based on the error message that you are receiving ( ”message”: "No attribute was found to generate the nameIdentifier. We tried with: "), this indicates that your SAML integration does not have a valid user attribute ( such as email or user_id ) to use as the user identifier in the SAML assertion.
It does look unlikely, but I do suggest verifying that your Connection ( " Username-Password-Authentication " in this case ) has the same Identifier that is recognized in the SAML assertion as the Name Identifier. In your Auth0 Dashboard, you can go to Authentication → Database → Username-Password-Authentication → Attributes tab and make sure your attribute is configured.
Following this, ensure that you have the correct mappings set within your application’s SAML Addon. I recommend reading through our documentation on how to Customize SAML Assertions for more information, but the standard mapping for nameIdentifier ( when using email as the identifying attribute ) should be:
"nameIdentifierProbes": [
"http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress"
]
More useful documentations that I can share, which should help with the issue:
Hope this helped!
Gerald