We agree that the sentence that the commenter refers to doesn't fit here. The profile expects that standard MessageHeader features for linking request and response messages will be used.  We also believe that adding information about Bundle.link population will clarify expectations. Proposed resolutions: Remove the sentence: "The Must Support elements in this profile enable the Data Consumer system to associate results in a Specialty Rx Query Response message to the associated Specialty Rx Query." Add the following to clarify Bundle.link population: The profile implements FHIR searchset response guidance ( https://www.hl7.org/fhir/search.html#conformance ) that allows the Data Consumer to be confident about what search parameters were used as criteria when processing the request. The Data Source system SHALL populate `Bundle.link.relation` with "self" and `Bundle.link.url` with the parameters that were actually used to process the search. For example: ``` "link" : [ { "relation" : "self", "url" : "Coverage?patient=patientEHR" } ]