Windows 8.1 MDM not responding to first SyncML from MDM server per session

Question

Here is the behaviour which I face after enrolling Windows 8.1
1) Device is enrolled
2) Client initiates the connection with the MDM server defined in provisioning XML during enrollment.
3) MDM Server sends some commands as a SyncML response.
 4) Client doesn't respond to these commands or not sending any SyncML. 
The same is being repeated in all client request. 
Below is the SyncML
for which I am expecting the response from the DM client:
<SyncML xmlns="SYNCML:SYNCML1.2">
    <SyncHdr>
        <VerDTD>1.2</VerDTD>
        <VerProto>DM/1.2</VerProto>
        <SessionID>1</SessionID>
        <MsgID>1</MsgID>
        <Target>
            <LocURI>{DevID}</LocURI>
        </Target>
        <Source>
            <LocURI>https://#####</LocURI>
        </Source>
    </SyncHdr>
    <SyncBody>
        <Status>
            <CmdID>1</CmdID>
            <MsgRef>1</MsgRef>
            <CmdRef>0</CmdRef>
            <Cmd>SyncHdr</Cmd>
            <TargetRef>{DevID}</TargetRef>
            <Data>212</Data>
        </Status>
        <Status>
            <CmdID>2</CmdID>
            <MsgRef>1</MsgRef>
            <CmdRef>2</CmdRef>
            <Cmd>Alert</Cmd>
            <Data>200</Data>
        </Status>
        <Status>
            <CmdID>3</CmdID>
            <MsgRef>1</MsgRef>
            <CmdRef>3</CmdRef>
            <Cmd>Replace</Cmd>
            <TargetRef>./devinf12</TargetRef>
            <Data>200</Data>
        </Status>
        <Get>
            <CmdID>75</CmdID>
            <Item>
                <Target>
                    <LocURI>./DevDetail/SwV</LocURI>
                </Target>
            </Item>
        </Get>
    </SyncBody>
</SyncML>
Here we had tried sending 
 <Target>
            <LocURI>0</LocURI>
        </Target>
But it didn't worked. Thanks in advance.

Answer 1

Thanks Obaid for the information but still my question is not answered. Here are more details about it:
I completed enrollment for a win8.1 device successfully, and got first SyncML message from device, but in the SyncML message,
the the url of mdm server was  http://localhost:8000/handler.ashx as you mentioned, while the uri of device was 0,
actually it should be the device Id. I responded a SyncML message to the device, but got no response from device any more. I’ve checked all registries after enrollment, all registries were well applied. Can give me some hints for such issue.
Looking forward to your reply. Thanks a lot.
The first message got from win8.1 device after enrollment is:
<SyncML xmlns="SYNCML:SYNCML1.2">
    <SyncHdr>
        <VerDTD>1.2</VerDTD>
        <VerProto>DM/1.2</VerProto>
        <SessionID>1</SessionID>
        <MsgID>1</MsgID>
        <Target>
            <LocURI>http://localhost:8000/handler.ashx</LocURI>
        </Target>
        <Source>
            <LocURI>0</LocURI>
        </Source>
    </SyncHdr>
    <SyncBody>
        <Alert>
            <CmdID>2</CmdID>
            <Data>0</Data>
        </Alert>
        <Replace>
            <CmdID>3</CmdID>
            <Item>
                <Source>
                    <LocURI>./DevInfo/DevId</LocURI>
                </Source>
                <Data>16313492</Data>
            </Item>
            <Item>
                <Source>
                    <LocURI>./DevInfo/Man</LocURI>
                </Source>
                <Data>Microsoft Corporation</Data>
            </Item>
            <Item>
                <Source>
                    <LocURI>./DevInfo/Mod</LocURI>
                </Source>
                <Data>Microsoft Windows NT Workstation 6.3 (Tablet Edition)</Data>
            </Item>
            <Item>
                <Source>
                    <LocURI>./DevInfo/DmV</LocURI>
                </Source>
                <Data>1.2</Data>
            </Item>
            <Item>
                <Source>
                    <LocURI>./DevInfo/Lang</LocURI>
                </Source>
                <Data>en-IN</Data>
            </Item>
        </Replace>
        <Final />
    </SyncBody>
</SyncML>
This message sent to device for which no response was received:
<SyncML xmlns="SYNCML:SYNCML1.2">
    <SyncHdr>
        <VerDTD>1.2</VerDTD>
        <VerProto>DM/1.2</VerProto>
        <SessionID>1</SessionID>
        <MsgID>1</MsgID>
        <Target>
            <LocURI>0</LocURI>
        </Target>
        <Source>
            <LocURI>http://localhost:8000/handler.ashx</LocURI>
        </Source>
    </SyncHdr>
    <SyncBody>
        <Status>
            <CmdID>1</CmdID>
            <MsgRef>1</MsgRef>
            <CmdRef>0</CmdRef>
            <Cmd>SyncHdr</Cmd>
            <TargetRef>0</TargetRef>
            <Data>212</Data>
        </Status>
        <Status>
            <CmdID>2</CmdID>
            <MsgRef>1</MsgRef>
            <CmdRef>2</CmdRef>
            <Cmd>Alert</Cmd>
            <Data>200</Data>
        </Status>
        <Status>
            <CmdID>3</CmdID>
            <MsgRef>1</MsgRef>
            <CmdRef>3</CmdRef>
            <Cmd>Replace</Cmd>
            <TargetRef>./devinf12</TargetRef>
            <Data>200</Data>
        </Status>
        <Get>
            <CmdID>75</CmdID>
            <Item>
                <Target>
                    <LocURI>./DevDetail/SwV</LocURI>
                </Target>
            </Item>
        </Get>
    </SyncBody>
</SyncML>