This code system http://hl7.org/fhir/testscript-profile-origin-types defines the following codes:

CodeDisplayDefinition
FHIR-ClientFHIR ClientGeneral FHIR client used to initiate operations against a FHIR server.
FHIR-SDC-FormFillerFHIR SDC FormFillerA FHIR client acting as a Structured Data Capture Form Filler.