[MS-ASCMD]: ActiveSync Command Reference Protocol Specification

Command
request/response
Parent elements
Child
elements
Data type
Number
allowed
SmartReply command
request (section 2.2.2.18.1)
SmartReply (section
2.2.3.145)
None string 1...1
(required)
The ClientId element value can be up to 40 characters in length and MUST be unique for each
message, as the server will use the ClientId element value to identify duplicate messages. The
ClientId element value can be a simple counter incremented for each new message.
2.2.3.27.2 ClientId (Sync)
The ClientId element is a required child element of the Add element in Sync command requests
and responses that contains a unique identifier (typically an integer) that is generated by the client
to temporarily identify a new object that is being created by using the Add element. The client
includes the ClientId element in the Add element request that it sends to the server. The server
response contains an Add element that contains the original client ID and a new server ID that was
assigned for the object, which replaces the client ID as the permanent object identifier.
All elements referenced in this section are defined in the AirSync namespace.
Command
request/response
Parent
elements
Child
elements
Data type
Number
allowed
Sync command request
()section 2.2.2.19.1
Add (section
2.2.3.7.2)
None
string ([MS-
ASDTYPE] section
2.6)
1…1
(required)
Sync command response
(section 2.2.2.19.2)
Add (section
2.2.3.7.2)
None string 1…1
(required)
The ClientId element is a unique identifier that consists of up to 64 digits and letters. The client
generates this ID. The value only has to be unique for the device during the duration of the Sync
request that adds the object to the server. The client stores the client IDs until the synchronization
session is completed successfully, to make recovery easier if the synchronization process fails.
An easy way to implement the client ID is to use a counter that is incremented for each new object
that is created on the client.
2.2.3.28 Collection
The Collection element is used in the following command requests and responses:
•GetItemEstimate command requests (section 2.2.2.7.1) and responses (section 2.2.2.7.2)
•Sync command requests (section 2.2.2.19.1) and responses (section 2.2.2.19.2)
The definition of the Collection element differs according to the context in which it is used. For
more details, see section 2.2.3.28.1 and section 2.2.3.28.2.
2.2.3.28.1 Collection (GetItemEstimate)
The Collection element is a required child element of the Collections element in
GetItemEstimate command requests and an optional child element of the Response element in
GetItemEstimate command responses. In both contexts, it contains elements that apply to a
[MS-ASCMD] — v20110315
ActiveSync Command Reference Protocol Specification
Copyright © 2011 Microsoft Corporation.
Release: Tuesday, March 15, 2011
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