In the FHIR specification, the narrative has two child elements, status and div, with both having a cardinality of 1..1. My understanding of this is that narratives must have child elements status and div.
However, I have seen resources in which the narratives have no such child elements, like the discharge summary-example here. Such a resource will also be validated as valid by the FHIR validator. Am I missing or misunderstanding something here?