Migrate MFA to Entra/Azure

Question

Hi there,

I have done allot from this page : https://learn.microsoft.com/en-us/entra/identity/authentication/how-to-migrate-mfa-server-to-mfa-user-authentication#prepare-staged-rollout

The only thing i am missing is to change the : Setting the claims rules to call Microsoft Entra multifactor authentication
We now see on the login page the 2 authentication servers.
first one is the Azure multi-factor authenticator
And the second one is the working onpremise : multi-factor authentication.

When user click on the second one they get the normal prcedure of authentication with the phone.

When they click on the first one they get a error saying:

Activity ID: 0aede16e-2936-4752-a679-d103639aa773

Relying party: Microsoft Office 365 Identity Platform

Error time: Wed, 13 Dec 2023 15:09:48 GMT

Cookie: enabled

User agent string: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Understandable because i did not change the Claims rules.
Can someone direct me in the direction what need to be changed to get both working so we can test the azure/entra authentication.