mfaConfiguration

Possible values include:

• OFF - MFA tokens aren't required and can't be specified during user registration.

• ON - MFA tokens are required for all user registrations. You can only specify ON when you're initially creating a user pool. You can use the SetUserPoolMfaConfig API operation to turn MFA "ON" for existing user pools.

• OPTIONAL - Users have the option when registering to create an MFA token.