Kafka Producer Config `acks=all`

Is there any property or configuration available to set acks=all for OOTB Producer that comes with Flowable Event Registry (Send-Event Task)?

You can set this where the Kafka producer is configured within your application. Using Spring you could configure a bean such as

 @Bean
    public ProducerFactory<String, String> flowableProducerFactory() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(
                ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,
                bootstrapAddress);
        configProps.put(
                ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
                StringSerializer.class);
        configProps.put(
                ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,
                StringSerializer.class);

        configProps.put(
                ProducerConfig.ACKS_CONFIG,"all"); 
}

When using Spring Boot you can also do this via property:

spring.kafka.producer.properties.acks=all

Flowable is using the default Producer Factory configured by Spring Boot to send the messages.

Cheers,
Filip