Additional Parameter in 'OAuth 2.0/OpenID Connect' Request - Authentication Context Class Reference (acr)

Hello community,

We already use 'OAuth 2.0/OpenID Connect' to log in to our OIM-Backend-Tools (Manager, Designer, ....).

Now we want to make Strong Authentication mandatory (Yubikeky+PIN) and prevent login with username+password.

For this we have to extend the OpenID request with the parameter acr_values.

The request string required by the provider: 

<AMBaseURL>/oauth2/<realmPath>/authorize?client_id=<client-id>&state=<app-state>&scope=openid%20profile&redirect_uri=<redirect-uri>&response_type=code&nonce=<nonce>&acr_values=<acr-value>

Let's split the request string:

OI Setting

Parameter in request

Login Endpoint (screenshot)

<AMBaseURL>/oauth2/<realmPath>/authorize

Client ID (screenshot)

client_id=<client-id>

Value okay: set dynamically

state=<app-state>

Scope (screenshot)

scope=openid%20profile

Redirect URI (screenshot)

redirect_uri=<redirect-uri>

Value okay

response_type=code

Value okay: set dynamically

nonce=<nonce>

 missing value

acr_values=<acr-value>


Question:

We can successfully send all the requested values with the string, but not the acr_values. Where can I enter this additional value in the OI settings?