Error trying to send Kogito end & start messages using Smallrye Kafka in Quarkus

I have created a quarkus app with multiple BPMN's having start messages and end messages.
The below is my application.properties for messaging

kafka.bootstrap.servers=0.0.0.0\:9092
mp.messaging.incoming.endSales.auto.offset.reset=earliest
mp.messaging.incoming.endSales.connector=smallrye-kafka
mp.messaging.incoming.endSales.topic=endSales
mp.messaging.incoming.endSales.value.deserializer=org.apache.kafka.common.serialization.StringDeserializer
mp.messaging.outgoing.kogito-processinstances-events.connector=smallrye-kafka
mp.messaging.outgoing.kogito-processinstances-events.topic=kogito-processinstances-events
mp.messaging.outgoing.kogito-processinstances-events.value.serializer=org.apache.kafka.common.serialization.StringSerializer
mp.messaging.outgoing.kogito-usertaskinstances-events.connector=smallrye-kafka
mp.messaging.outgoing.kogito-usertaskinstances-events.topic=kogito-usertaskinstances-events
mp.messaging.outgoing.kogito-usertaskinstances-events.value.serializer=org.apache.kafka.common.serialization.StringSerializer
mp.messaging.outgoing.kogito-variables-events.connector=smallrye-kafka
mp.messaging.outgoing.kogito-variables-events.topic=kogito-variables-events
mp.messaging.outgoing.kogito-variables-events.value.serializer=org.apache.kafka.common.serialization.StringSerializer
mp.messaging.outgoing.kogito_outgoing_stream.connector=smallrye-kafka
mp.messaging.outgoing.kogito_outgoing_stream.topic=endSales
mp.messaging.outgoing.kogito.outgoing_stream.value.serializer=org.apache.kafka.common.serialization.StringSerializer
mp.messaging.outgoing.kogito_outgoing_newEnds.connector=smallrye-kafka
mp.messaging.outgoing.kogito_outgoing_newEnds.topic=newEnds
mp.messaging.outgoing.kogito_outgoing_newEnds.value.serializer=org.apache.kafka.common.serialization.StringSerializer
mp.messaging.outgoing.kogito_outgoing_sudoku.connector=smallrye-kafka
mp.messaging.outgoing.kogito_outgoing_sudoku.topic=sudoku
mp.messaging.outgoing.kogito_outgoing_sudoku.value.serializer=org.apache.kafka.common.serialization.StringSerializer

This throws me the following error during build time

 java.lang.IllegalArgumentException: SRMSG00071: Invalid channel configuration -  the `connector` attribute must be set for channel `kogito`
        at io.smallrye.reactive.messaging.providers.impl.ConnectorConfig.lambda$new$0(ConnectorConfig.java:50)
        at java.base/java.util.Optional.orElseThrow(Optional.java:403)
        at io.smallrye.reactive.messaging.providers.impl.ConnectorConfig.lambda$new$1(ConnectorConfig.java:50)
        at java.base/java.util.Optional.orElseGet(Optional.java:364)
        at io.smallrye.reactive.messaging.providers.impl.ConnectorConfig.<init>(ConnectorConfig.java:49)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory.lambda$extractConfigurationFor$0(ConfiguredChannelFactory.java:85)
        at java.base/java.lang.Iterable.forEach(Iterable.java:75)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory.extractConfigurationFor(ConfiguredChannelFactory.java:74)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory.initialize(ConfiguredChannelFactory.java:101)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory_Subclass.initialize$$superforward1(Unknown Source)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory_Subclass$$function$$4.apply(Unknown Source)
        at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:54)
        at io.quarkus.arc.runtime.devconsole.InvocationInterceptor.proceed(InvocationInterceptor.java:62)
        at io.quarkus.arc.runtime.devconsole.InvocationInterceptor.monitor(InvocationInterceptor.java:49)
        at io.quarkus.arc.runtime.devconsole.InvocationInterceptor_Bean.intercept(Unknown Source)
        at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:41)
        at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:41)
        at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:32)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory_Subclass.initialize(Unknown Source)
        at io.smallrye.reactive.messaging.providers.impl.ConfiguredChannelFactory_ClientProxy.initialize(Unknown Source)
        at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
        at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1845)
        at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762)
        at io.smallrye.reactive.messaging.providers.extension.MediatorManager.start(MediatorManager.java:192)

Also are there any channel naming conventions related to kafka topics for Kogito messages in Quarkus?

As explained here, the important thing is that the name of your message name in your bpmn matches the name of the channel in your application.properties
As a recommendation use shorter channel names. For example, rather than kogito_outgoing_newEnds, just use newEnds (so you do not need to specify the topic, since the topic is by default equal to channel name)
As you will see in the blog, kogito_outgoing_stream is the default channel name (which can also be changed through configuration)