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John Austin|Last Updated: 10/25/2016
2 Contributors

Applies to: Skype for Business 2015

        Represents an invitation to a new or existing [onlineMeeting](

For more on web links, see Web links.

relThe resource that this link points to. In JSON, this is the outer container.
hrefThe location of this resource on the server, and the target of an HTTP operation.

Resource description

This resource can be incoming or outgoing.If outgoing, the onlineMeetingInvitation can be created using joinOnlineMeeting.This resource assists in keeping track of the invitation status; for example, the invitation could be accepted, declined, or ignored.An outgoing onlineMeetingInvitation will be in the 'Connecting' state while the invitation is being processed.Note that the onlineMeetingInvitation will not complete until the user has been admitted (admit). Even after the user is in the lobby, the onlineMeetingInvitation will still be in the 'Connecting' state.The onlineMeetingInvitation will complete with success if the user is admitted from the lobby or with failure if he or she is rejected.Ultimately, the onlineMeetingInvitation will complete with success or failure (in which case a reason is supplied).The onlineMeetingInvitation will complete with success only after the participant appears in the roster.If incoming, the onlineMeetingInvitation was created after the user accepted a participantInvitation.Note that this is the only way an incoming onlineMeetingInvitation can occur.


anonymousDisplayNameThe display name for anonymous users. This is required for anonymous users and should not be set for authenticated users.The maximum length is 250 characters.
availableModalitiesThe available modality types in the conference.
directionThe direction of the invitation.
importanceThe importance.
onlineMeetingUriThe URI of the meeting to join.
messageThe first message represented in this invitation.
operationIdThe operation ID as supplied by the client.The maximum length is 50 characters.
stateThe invitation state.
subjectThe subject.The maximum length is 250 characters.
threadIdThe thread ID of the conversation.
toThe target of this invitation.

This resource can have the following relationships.

selfThe link to the current resource.
acceptAccepts an incoming invitation.
acceptedByContactRepresents the contact who ultimately accepted an incoming invitation.
cancelCancels the corresponding invitation.
conversationRepresents the local participants perspective on a multi-modal, multi-party communication.
declineDeclines an incoming invitation.
fromRepresents the participant that sent an invitation.
onBehalfOfRepresents the contact on whose behalf the invitation was received.
toRepresents the originally intended target of the invitation as a contact.
fromRepresents the participant that sent an invitation.

Azure Active Directory scopes for online applications

The user must have at least one of these scopes for operations on the resource to be allowed.

Conversations.InitiateInitiate conversations and join meetingsAllows the app to initiate instant messages, audio, video, and desktop sharing conversations; and join meetings on-behalf of the signed-in user
Conversations.ReceiveReceive conversation invitesAllows the app to receive instant messages, audio, video, and desktop sharing invitations on-behalf of the signed-in user



onlineMeetingInvitationHighcommunicationDelivered when an online meeting invitation is started. This occurs when the application joins the onlineMeeting modality.

Sample of returned event data. This sample is given only as an illustration of event syntax. The semantic content is not guaranteed to correspond to a valid scenario. { "_links" : { "self" : { "href" : "http://sample:80/ucwa/v1/applications/appId/events?ack=1" }, "next" : { "href" : "http://sample:80/ucwa/v1/applications/appId/events?ack=2" } }, "sender" : [ { "rel" : "communication", "href" : "", "events" : [ { "link" : { "rel" : "onlineMeetingInvitation", "href" : "" }, "type" : "started" } ] } ] }


onlineMeetingInvitationHighcommunicationDelivered when the online meeting invitation is updated.

Sample of returned event data. This sample is given only as an illustration of event syntax. The semantic content is not guaranteed to correspond to a valid scenario. { "_links" : { "self" : { "href" : "http://sample:80/ucwa/v1/applications/appId/events?ack=1" }, "next" : { "href" : "http://sample:80/ucwa/v1/applications/appId/events?ack=2" } }, "sender" : [ { "rel" : "communication", "href" : "", "events" : [ { "link" : { "rel" : "onlineMeetingInvitation", "href" : "" }, "type" : "updated" } ] } ] }



Operation description coming soon...

Request body


Response body

The response from a GET request contains the properties and links shown in the Properties and Links sections at the top of this page.

Synchronous errors

The errors below (if any) are specific to this resource. Generic errors that can apply to any resource are covered in Generic synchronous errors.

BadRequest400NoneSomething is wrong with the entire request (malformed XML/JSON, for example).
BadRequest400ParameterValidationFailureIncorrect parameters were provided for the request (for example, the requested conference subject exceeds the maximum length).
Gone410NoneThe content-type is not supported.
NotFound404NoneThe resource does not exist.
ServiceFailure500InvalidExchangeServerVersionInvalid exchange server version.The exchange mailbox of the server might have moved to an unsupported version for the required feature.
Conflict409AlreadyExistsThe already exists error.
Conflict409TooManyGroupsThe too many groups error.
Conflict409NoneUn-supported Service/Resource/API error.
Gone410CannotRedirectCannot redirect since there is no back up pool configured.


JSON Request

Get HTTP/1.1
Authorization: Bearer cwt=PHNhbWw6QXNzZXJ0aW9uIHhtbG5...uZm8
Accept: application/json

JSON Response

This sample is given only as an illustration of response syntax. The semantic content is not guaranteed to correspond to a valid scenario.

HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 3393
  "rel" : "onlineMeetingInvitation",
  "anonymousDisplayName" : "Cathy Arnold",
  "availableModalities" : [
  "direction" : "Incoming",
  "importance" : "Normal",
  "onlineMeetingUri" : "",
  "operationId" : "74cb7404e0a247d5a2d4eb0376a47dbf",
  "state" : "Connected",
  "subject" : "Strategy for next quarter",
  "threadId" : "292e0aaef36c426a97757f43dda19d06",
  "to" : "",
  "_links" : {
    "self" : {
      "href" : "/ucwa/v1/applications/192/communication/invitations/711"
    "message" : {
      "href" : "data:text/plain;base64,somebase64encodedmessage"
    "from" : {
      "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/831"
    "accept" : {
      "href" : "/ucwa/v1/applications/192/communication/invitations/665/accept"
    "acceptedByContact" : {
      "href" : "/ucwa/v1/applications/192/people/169"
    "cancel" : {
      "href" : "/ucwa/v1/applications/192/communication/invitations/665/cancel"
    "conversation" : {
      "href" : "/ucwa/v1/applications/192/communication/conversations/137"
    "decline" : {
      "href" : "/ucwa/v1/applications/192/communication/invitations/665/decline"
    "onBehalfOf" : {
      "href" : "/ucwa/v1/applications/192/people/444"
    "to" : {
      "href" : "/ucwa/v1/applications/192/people/107"
  "_embedded" : {
    "from" : {
      "rel" : "participant",
      "anonymous" : true,
      "inLobby" : true,
      "local" : true,
      "name" : "Joe Smith",
      "organizer" : true,
      "otherPhoneNumber" : "tel:+14251111111",
      "role" : "Attendee",
      "sourceNetwork" : "SameEnterprise",
      "uri" : "",
      "workPhoneNumber" : "tel:+14251111111",
      "_links" : {
        "self" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196"
        "admit" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/admit"
        "contact" : {
          "href" : "/ucwa/v1/applications/192/people/282"
        "contactPhoto" : {
          "href" : "/ucwa/v1/applications/192/people/282/contactPhoto"
        "contactPresence" : {
          "href" : "/ucwa/v1/applications/192/people/282/contactPresence"
        "conversation" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137"
        "demote" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/demote"
        "eject" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/eject"
        "me" : {
          "href" : "/ucwa/v1/applications/192/me"
        "participantApplicationSharing" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantApplicationSharing"
        "participantAudio" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantAudio"
        "participantDataCollaboration" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantDataCollaboration"
        "participantMessaging" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantMessaging"
        "participantPanoramicVideo" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantPanoramicVideo"
        "participantVideo" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantVideo"
        "promote" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/promote"
        "reject" : {
          "href" : "/ucwa/v1/applications/192/communication/conversations/137/participants/196/reject"
    "startEmergencyCallInput" : [
        "rel" : "startEmergencyCallParameters",
        "_links" : {
          "self" : {
            "href" : "/ucwa/v1/applications/192/communication/invitations/665/startEmergencyCallParameters"

XML Request

Get HTTP/1.1
Authorization: Bearer cwt=PHNhbWw6QXNzZXJ0aW9uIHhtbG5...uZm8
Accept: application/xml

XML Response

This sample is given only as an illustration of response syntax. The semantic content is not guaranteed to correspond to a valid scenario.

HTTP/1.1 200 OK
Content-Type: application/xml
Content-Length: 4276
<?xml version="1.0" encoding="utf-8"?>
<resource rel="onlineMeetingInvitation" href="/ucwa/v1/applications/192/communication/invitations/711" xmlns="">
  <link rel="message" href="data:text/plain;base64,somebase64encodedmessage" />
  <link rel="from" href="/ucwa/v1/applications/192/communication/conversations/137/participants/831" />
  <link rel="accept" href="/ucwa/v1/applications/192/communication/invitations/665/accept" />
  <link rel="acceptedByContact" href="/ucwa/v1/applications/192/people/169" />
  <link rel="cancel" href="/ucwa/v1/applications/192/communication/invitations/665/cancel" />
  <link rel="conversation" href="/ucwa/v1/applications/192/communication/conversations/137" />
  <link rel="decline" href="/ucwa/v1/applications/192/communication/invitations/665/decline" />
  <link rel="onBehalfOf" href="/ucwa/v1/applications/192/people/444" />
  <link rel="to" href="/ucwa/v1/applications/192/people/107" />
  <property name="rel">onlineMeetingInvitation</property>
  <property name="anonymousDisplayName">Cathy Arnold</property>
  <propertyList name="availableModalities">
  <property name="direction">Incoming</property>
  <property name="importance">Normal</property>
  <property name="onlineMeetingUri"></property>
  <property name="operationId">74cb7404e0a247d5a2d4eb0376a47dbf</property>
  <property name="state">Connecting</property>
  <property name="subject">Strategy for next quarter</property>
  <property name="threadId">292e0aaef36c426a97757f43dda19d06</property>
  <property name="to"></property>
  <resource rel="from" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196">
    <link rel="admit" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/admit" />
    <link rel="contact" href="/ucwa/v1/applications/192/people/282" />
    <link rel="contactPhoto" href="/ucwa/v1/applications/192/people/282/contactPhoto" />
    <link rel="contactPresence" href="/ucwa/v1/applications/192/people/282/contactPresence" />
    <link rel="conversation" href="/ucwa/v1/applications/192/communication/conversations/137" />
    <link rel="demote" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/demote" />
    <link rel="eject" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/eject" />
    <link rel="me" href="/ucwa/v1/applications/192/me" />
    <link rel="participantApplicationSharing" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantApplicationSharing" />
    <link rel="participantAudio" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantAudio" />
    <link rel="participantDataCollaboration" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantDataCollaboration" />
    <link rel="participantMessaging" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantMessaging" />
    <link rel="participantPanoramicVideo" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantPanoramicVideo" />
    <link rel="participantVideo" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/participantVideo" />
    <link rel="promote" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/promote" />
    <link rel="reject" href="/ucwa/v1/applications/192/communication/conversations/137/participants/196/reject" />
    <property name="rel">participant</property>
    <property name="anonymous">True</property>
    <property name="inLobby">True</property>
    <property name="local">True</property>
    <property name="name">Joe Smith</property>
    <property name="organizer">True</property>
    <property name="otherPhoneNumber">tel:+14251111111</property>
    <property name="role">Attendee</property>
    <property name="sourceNetwork">SameEnterprise</property>
    <property name="uri"></property>
    <property name="workPhoneNumber">tel:+14251111111</property>
  <resource rel="startEmergencyCallInput" href="/ucwa/v1/applications/192/communication/invitations/665/startEmergencyCallParameters">
    <property name="rel">startEmergencyCallParameters</property>
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