How to redirect the class name from avro schema name in spring-cloud-stream-kafka-stream?

I have a consumer app for consuming a Kafka topic. When the producer publishes the record of class type Reservation through Avro, it assigns the schema name as my_reservations on the schema registry.

In my consumer app, I set the config as

default.value.serde: io.confluent.kafka.streams.serdes.avro.SpecificAvroSerde

and the processor as

@Bean
    public java.util.function.Consumer<KStream<String, Reservation>> process() {

        return input.foreach((key, value) -> {
                    System.out.println(" Value: " + value);
                });
    }

But I'm getting below error from the consumer because the Reservation classpath is reservation.Reservation.

Caused by: org.apache.kafka.common.errors.SerializationException: Could not find class reservation.my_reservations specified in writer's schema whilst finding reader's schema for a SpecificRecord.

How can I fix it? I'm using the functional way to create the consumer as mentioned in the official doc.