Azure B2C MFA TOTP - numberOfAvailableDevices Get available devices

Question

Hi Team,

I have implemented TOTP in solution as per below sample code https://github.com/azure-ad-b2c/samples/tree/master/policies/totp/policy

I have registered MFA in 2 mobiles but numberOfAvailableDevices claim still shows 1 , instead of 2. I need to implement validation like if numberOfAvailableDevices greater than 1 show error page. could you please help me?

And Is there any B2C event tells that user scanned QR code ,my intention is to scan QR code only once, once QR code is scanned should not allow to scan same QR code .

Could you please help me to resolve my queries.

Thanks,

Sukeerthi