Unable to configure Application Load Balancer using Cognito client App which has no secret

Hello,

I try to setup environment in which Cognito user pool Application is linked to the Application Load Balancer Listener. When I try to use App client created with no secret I get an error "The user pool client must have a client secret" . Client App has been created with no secret in order to use TOTP. My question is whether there is a limitation to use App client without secret linked to the ALB ?

br Jacko