Validator raises the following two errors when the kind is set to instance:

ERROR: [error] in /*:CapabilityStatement[namespace-uri()='http://hl7.org/fhir'[1]] @ CapabilityStatement cpb-16: If kind = requirements, implementation and software must be absent Test=not(f:kind/@value='instance') or (not(exists(f:implementation)) and not(exists(f:software)))
ERROR: [error] in /*:CapabilityStatement[namespace-uri()='http://hl7.org/fhir'[1]] @ CapabilityStatement cpb-15: If kind = capability, implementation must be absent, software must be present Test=not(f:kind/@value='instance') or (not(exists(f:implementation)) and exists(f:software))