Hi Pallavi,
The documentation states the following.
To configure the ACR value(s) in the OIDC SSO module, follow these steps:
Navigate to the screen where the OIDC configuration is managed.
Select your client configuration and click Edit.
Add the ACR values that are supported by your IDP to the OIDC Client Configuration.
For example, supported ACR Values for Okta IdP are: urn:okta:loa:1fa:any
and urn:okta:loa:2fa:any
.
Save the configuration changes.
Hope this helps.