Redis Stream when consumed by multiple instances of a service in a microservice architecture

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Suppose A redis stream with "stream_key1" is published in one services "A" and there is another service "B" which is the consumer, but service B have three instances, and same message will be consumed by all three instance, how to avoid the processing duplicacy in this scenario, If i go with using consumer Id then it will leads to creating 'n' consumer Ids and we can't track on it.