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GetClientAccessToken operation

Exchange Server 2013

Find information about the GetClientAccessToken EWS operation.

Last modified: November 29, 2012

Applies to: Exchange Online | Exchange Server 2013 | Office 365

In this article
Using the GetClientAccessToken operation
GetClientAccessToken operation request example: Get a caller identity token
Successful GetClientAccessToken operation response
GetClientAccessToken operation error response
Additional resources

The GetClientAccessToken operation gets a client access token for a mail app for Outlook.

This operation was introduced in Exchange Server 2013.

The GetClientAccessToken operation request takes two required arguments: the identifier of the app, and the token type. You can use the GetAppManifests operation to request the app identifier.

GetClientAccessToken operation SOAP headers

The GetClientAccessToken operation can use the SOAP headers that are listed in the following table.

Header name

Element

Description

RequestVersion

RequestServerVersion

Identifies the schema version for the operation request. This header is applicable to a request.

ServerVersion

ServerVersionInfo

Identifies the version of the server that responded to the request. This header is applicable to a response.

The following example of a GetClientAccessToken operation request shows how to get a caller identity token for an app.

<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
               xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types"
               xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages">
   <soap:Header>
      <t:RequestServerVersion Version="Exchange2013" />
   </soap:Header>
   <soap:Body >
      <m:GetClientAccessToken>
         <m:TokenRequests>
            <t:TokenRequest>
               <t:Id>1C50226D-04B5-4AB2-9FCD-42E236B59E4B</t:Id>
               <t:TokenType>CallerIdentity</t:TokenType>
            </t:TokenRequest>
         </m:TokenRequests>
      </m:GetClientAccessToken>
   </soap:Body>
</soap:Envelope>


The request SOAP body contains the following elements:

The following example shows a successful response to a GetClientAccessToken operation request to get a caller identity token for an app.

Note Note

The token values in this article have been shortened to preserve readability.

<?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="15" 
                           MinorVersion="0" 
                           MajorBuildNumber="556" 
                           MinorBuildNumber="14" 
                           Version="Exchange2013" 
                           xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" 
                           xmlns="http://schemas.microsoft.com/exchange/services/2006/types" 
                           xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
                           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
           xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:GetClientAccessTokenResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" 
                                      xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:GetClientAccessTokenResponseMessage ResponseClass="Success">
               <m:ResponseCode>NoError</m:ResponseCode>
               <m:Token>
                  <t:Id>1C50226D-04B5-4AB2-9FCD-42E236B59E4B</t:Id>
                  <t:TokenType>CallerIdentity</t:TokenType>
                  <t:TokenValue>eyJ0eXAmv0QitaJg</t:TokenValue>
                  <t:TTL>479</t:TTL>
               </m:Token>
            </m:GetClientAccessTokenResponseMessage>
         </m:ResponseMessages>
      </m:GetClientAccessTokenResponse>
   </s:Body>
</s:Envelope>


The response SOAP body contains the following elements:

The following example shows an error response to a GetClientAccessToken operation request. This is a response to a request to get an extension callback token without the appropriate permissions.

<?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
   <s:Header>
      <h:ServerVersionInfo MajorVersion="15" 
                           MinorVersion="0" 
                           MajorBuildNumber="556" 
                           MinorBuildNumber="14" 
                           Version="Exchange2013" 
                           xmlns:h="http://schemas.microsoft.com/exchange/services/2006/types" 
                           xmlns="http://schemas.microsoft.com/exchange/services/2006/types" 
                           xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
                           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
   </s:Header>
   <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
           xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <m:GetClientAccessTokenResponse xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" 
                                      xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
         <m:ResponseMessages>
            <m:GetClientAccessTokenResponseMessage ResponseClass="Error">
               <m:MessageText>The caller does not have enough permission for this token request.</m:MessageText>
               <m:ResponseCode>ErrorInvalidClientAccessTokenRequest</m:ResponseCode>
               <m:DescriptiveLinkKey>0</m:DescriptiveLinkKey>
            </m:GetClientAccessTokenResponseMessage>
         </m:ResponseMessages>
      </m:GetClientAccessTokenResponse>
   </s:Body>
</s:Envelope>

The error response SOAP body contains the following elements:

For additional error codes that are generic to EWS and specific to this operation, see ResponseCode.

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