WNS failed to wakeup the device though the response is 200 ok and no events observed in event viewer

Question

Hello,

Unable to wake up the device from WNS though received 200 OK from WNS to MDM server when a wakeup command is sent to WNS.

Have set the poll interval from 5 to 0 and set the PFN to the device from the MDM server using the below command via POLL call. Post the command was issued, I initiated a wakeup call to the device from the MDM server to WNS and no request was received by the device from WNS resulting in a communication break between the device and the MDM server.

  <Replace>
     <CmdID>27</CmdID>
     <Item>
       <Target>
         <LocURI>./Vendor/MSFT/DMClient/Provider/BigFixMCM/Poll/IntervalForFirstSetOfRetries</LocURI>
       </Target>
       <Meta>
         <Format xmlns="syncml:metinf">int</Format>
       </Meta>
       <Data>0</Data>
     </Item>
   </Replace>
   <Replace>
     <CmdID>28</CmdID>
     <Item>
       <Target>
         <LocURI>./Vendor/MSFT/DMClient/Provider/BigFixMCM/Poll/NumberOfFirstRetries</LocURI>
       </Target>
       <Meta>
         <Format xmlns="syncml:metinf">int</Format>
       </Meta>
       <Data>0</Data>
     </Item>
   </Replace>
 <Replace>     
  <CmdID>18</CmdID>
       <Item> 
        <Target>           	            <LocURI>./Vendor/MSFT/DMClient/Provider/BigFixMCM/Push/PFN</LocURI>       
  </Target>      
   <Meta>          
 <Format xmlns="syncml:metinf">chr</Format>       
  </Meta>      
   <Data>PFNNAME</Data> 
      </Item> 
    </Replace> 

To confirm this I have viewed event viewer logs and observed that no events occurred on sending the wake-up command to WNS.

path referred in event viewer ==>event viewer -> application and services logs -> microsoft -> windows -> Device Managment -enterprise-diagnostics-provider

I have also noticed, the communication between WNS and the device is fine once the device is restarted.

Needed a solution without restarting the device.

and also wanted to know if changing the notification type from poll to push can cause any issue?