This design guidelines document specifies design guidelines for the Capability Exchange-enabled PHG and Capability Exchange-enabled services CCCs. The design guidelines specify the testable requirements that must be implemented by the PHG in order to classify it as a Capability Exchangeenabled PHG. The Capability Exchange-enabled PHG shall be able to retrieve a root file from the Health Fitness services and be able to validate that the root file conforms to the HL7 hData hRF document. In addition@ the design guidelines specify testable requirements for Health Fitness services which detail how Capability Exchange-enabled Health Fitness services shall respond to the requests from a Capability Exchange-enabled PHG and shall be able to validate that the root document conforms to the HL7 hData hRF document