@mou, Is this what you are looking for? https://fusionauth.io/docs/lifecycle/authenticate-users/application-authentication-tokens

@kiouplidis I found this in the documentation.

In version 1.50.0 and later, the UserInfo response can be customized with a lambda using the oauthConfiguration.userinfoPopulateLambda value of the application object. See UserInfo populate lambda.

In FusionAuth, you can add custom data to the oauth2/userinfo endpoint response using a Lambda function. This function can add extra claims to the UserInfo response. Here's an example of a simple Lambda function that adds a few extra claims:

function populate(userInfo, user, registration, jwt) {
  // Add a new claim named 'favoriteColor' from a custom data attribute on the user
  userInfo.favoriteColor = user.data.favoriteColor;
  // Add a new claim named 'dept' using a custom data attribute on the registration
  userInfo.dept = registration.data.departmentName;
  // Copy a claim named 'applicationId' from the provided JWT
  userInfo.applicationId = jwt.applicationId;
  // Create an event log of type 'Debug' when the lambda has Debug enabled
  console.debug('Added custom claims to the UserInfo response');
}

In this example, the favoriteColor and dept are custom claims added to the UserInfo response. These claims are derived from the custom data attributes on the user and registration respectively.
Please note that the Lambda function needs to be assigned to an application in FusionAuth for it to take effect.

Hello @yuval,
I'm not very familiar with Salesforce but when taking a look at the guide there is a step that says "Scroll down to the Salesforce Configuration section and open the address from Test-Only Initialization URL in an incognito window.". What do you see when you try that?

If you are not getting that information, can you please describe in a little more detail what steps you have taken and when you receive the above message about the invalid iss?

I am running through the Integrate Your .NET 7 Application With FusionAuth quickstart guide and encountered the error listed below.

I think it has to do with following message in the guide:
The script set up a RS256 asymmetric signing key. FusionAuth supports this signing algorithm, but doesn't ship with a default key.

How do I add the required key to FusionAuth?

Error Message:
An unhandled exception occurred while processing the request.
SecurityTokenSignatureKeyNotFoundException: IDX10501: Signature validation failed. Unable to match key:
kid: '236bb45e-e88c-4f07-87ff-c93d6fb752a2'.
Number of keys in TokenValidationParameters: '0'.
Number of keys in Configuration: '0'.
Exceptions caught:
''.
token: '{"alg":"HS256","typ":"JWT","gty":["authorization_code"],"kid":"236cc45e-e88c-4f07-87ff-c93d6fb752a2"}.{"aud":"236bb45e-e88c-4f07-87ff-c93d6fb752a2","exp":1687312521,"iat":1687308921,"iss":"acme.com","sub":"e5e4a956-0f9d-4bec-9121-dededb20e00f","jti":"ca5d3d30-ef26-4e48-afcb-d5ba670ac2d4","authenticationType":"PING","email":"myemail@email.com","email_verified":true,"at_hash":"ANWNkB4EA34d0cr1A50zQg","c_hash":"eCEeL-bgcDFkzcpmNT5k9g","scope":"openid profile","nonce":"634229057201762476.ZDQ1NzEzZWMtM2M4OS00ODgxLWI3ZmEtNjJhZWY0MzhlOWYzN2I4ODdhNmQtYTI2OS00OTc0LThhOWEtYzc2OGEzYmIzN2M3","sid":"4fe9dcc0-1ce9-4819-a97a-47c38cb730b8","auth_time":1687308921,"tid":"a51e69f7-520b-6860-2d33-d1e12f797af9"}'.

@it-contracts Hello. I am pretty new to FusionAuth, but my understanding is that you are taking the correct steps. I am not aware of a way to do this within a single call.

Are you simply looking to be more efficient with the calls or is there some reason this workflow will not work for you?

What is the best way for analytics tracking after a user has successfully registered?

@it-contracts I apologize for misunderstanding your initial question. You and @kash are correct in that by using FusionAuth, it will appear to be one call from your perspective. However, in the background, FusionAuth will still need to make the same amount of calls to the the access token. And another nice thing about using FusionAuth is that you will be able to add other identity providers in the same way.

Does FustionAuth support multi-region active-active set-up for cloud services?

@it-contracts Can you please share the OAuth settings you have for your application? In the Fusion Auth Admin UI select Applications. Select Edit or view for your application. Share the OAuth and JWT settings. Be sure to remove any sensitive information before posting here.

@sandesh Thanks for sharing her on the forum. Hope you are able to accomplish your end goal with the APIs.

It's one thing to read about new features in the release notes and another to see them demo'd. If you're interested in what FusionAuth has been up to, come check it out tomorrow in our Q1 2026 edition of Shipped!

@batmysta Going to link to this issue.

@batmysta I know this is a bit of a "trick" answer, but the reality is the right answer depends on what exactly you want the user to have access for. I understand that the roles in FusionAuth may give more access than you may like (I.E. MFA is a tenant level settings, but there is no role just for MFA edit.), but there are some other options.

Again, depending on what you want to do and what version you are running, there is the idea of the Tenant Manager applicaiton. This will still not help you with MFA settings thought.

The other option is using the APIs. Since everything in The FusionAuth admin UI is API first, you could create your own application that would allow users you choose to edit them.

Hope this is useful.

@hvfa Apologies for being a bit AWOL. I hope for things to slow down and be able to take a look at this a little more closely next week.

@hvfa At first glance this looks like a domain issue. Can you share an example of how your Authorized redirect URLs and Authorized request origin URLs are set up in relation to the applications. Please feel free to use example domains like https://domain1/ or https://domain2 and so on. It may also be useful to give the other OAuth settings for the applications as well (be sure to redact or obscure and sensitive information).

@ralph Thanks for following up and sharing!

@ralph Are you getting the same errors? I did see a reference to trying pg_dump vs pg_dumpall. Can you try that and let us know if it works?

@james-hudson You may want to check out this blog post. Hopefully that can help.

@scottw Hopefully, I can get a little time over the next couple of days and see if I can duplicate it. I will let you know if I find anything. Anyone else seeing his behavior?

@rgros Do you have Debug enabled?

Then you should check your Event Log.

Let us know what you find.