I'm cautious not to ask too many questions on here, but there really doesn't seem to be a good XML end to end guide that explains these things.
I have now a Business operation that's going to call a url like
InterSystems HealthShare is a healthcare informatics platform for hospitals, integrated delivery networks (IDNs) and regional and national health information exchanges (HIE). HealthShare includes health information exchange, data aggregation, workflow, text analysis, and analytics technology.