If you could show us a sanitised version of one of these messages, we might have a better chance of answering your question. When I searched for BCML, all I could find was references to a Zelda Mod Loader, or the
Biological Connection Markup Language[
^]. Given that you are talking about something happening with an enterprise tool (Kafka), I am leaning more towards that being what you are interested in but any answer on this would just be assumptions our part. Please provide more information so we can answer more fully.