@marc i got the below response https://stackoverflow.com/questions/66305243/support-for-concurrency-parameter-refresh-on-the-fly-spring-cloud-stream/66318141#66318141
Not all binders/technologies support that, so it’s not available at the SCSt level; if you are using the RabbitMQ binder, you can customize the container properties using a ListenerContainerCustomizer bean.