http://terminology.hl7.org/CodeSystem/endpoint-payload-type|4.0.1

{
  "description" : "This is an example value set defined by the FHIR project, that could be used to represent possible payload document types.",
  "compose" : null,
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "date" : null,
  "meta" : {
    "profile" : [ "http://hl7.org/fhir/StructureDefinition/shareablecodesystem" ],
    "lastUpdated" : "2019-11-01T09:29:23.356+11:00"
  },
  "publisher" : "HL7 Patient Administration",
  "content" : "complete",
  "name" : "EndpointPayloadType",
  "copyright" : "Some content from IHE® Copyright © 2015 IHE International, Inc.    This content is from the IHE Technical Frameworks and Supplements,    available for free download and use at http://www.ihe.net/Technical_Frameworks/",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "Endpoint Payload Type",
  "supliment" : null,
  "extension" : [ {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "pa"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "draft"
  }, {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 1
  } ],
  "status" : "draft",
  "id" : "8f72d06f-2414-52bf-804d-414e6cb4c5ac",
  "url" : "http://terminology.hl7.org/CodeSystem/endpoint-payload-type",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1139",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "any",
    "display" : "Any",
    "definition" : "Any payload type can be used with this endpoint, it is either a payload agnostic infrastructure (such as a storage repository), or some other type of endpoint where payload considerations are internally handled, and not available"
  }, {
    "code" : "none",
    "display" : "None",
    "definition" : "This endpoint does not require any content to be sent; simply connecting to the endpoint is enough notification. This can be used as a 'ping' to wakeup a service to retrieve content, which could be to ensure security considerations are correctly handled"
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    } ]
  } ]
}