Hi Konstantin,
As per your suggestion I have used the below structure but here also same issue. I did not get any error in response message but Shop Order is not released. Please provide your suggestion. I have even tried with different order and plant.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:mein="http://sap.com/xi/MEINT" xmlns:gdt="http://sap.com/xi/SAPGlobal/GDT" xmlns:me="http://sap.com/xi/ME">
<soapenv:Header/>
<soapenv:Body>
<mein:ProductionOrderUpdateRequest_sync>
<mein:ProductionOrder>
<me:SiteRef>
<me:Site>9999</me:Site>
</me:SiteRef>
<me:ShopOrderIn>
<!--You may enter the following 40 items in any order-->
<me:ShopOrder>1006928</me:ShopOrder>
<me:SiteRef>
<me:Site>9999</me:Site>
</me:SiteRef>
<me:StatusRef>
<!--You may enter the following 2 items in any order-->
<me:Status>501</me:Status>
<!--Optional:-->
</me:StatusRef>
<me:Priority>500</me:Priority>
<!--Optional:-->
<me:PlannedItemRef>
<!--You may enter the following 3 items in any order-->
<me:Item>1173</me:Item>
<!--Optional:-->
<me:Revision>#</me:Revision>
<!--Optional:-->
</me:PlannedItemRef>
<me:QuantityToBuild>3</me:QuantityToBuild>
</me:ShopOrderIn>
<me:ShopOrderReleaseInfo>
<me:Release>all</me:Release>
</me:ShopOrderReleaseInfo>
</mein:ProductionOrder>
</mein:ProductionOrderUpdateRequest_sync>
</soapenv:Body>
</soapenv:Envelope>
Response message
<SOAP-ENV:Envelope xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Body>
<ns2:ProductionOrderUpdateConfirmation_sync xmlns="http://sap.com/xi/SAPGlobal/GDT" xmlns:ns3="http://sap.com/xi/ME" xmlns:ns2="http://sap.com/xi/MEINT">
<ns2:ProductionServiceResponse>
<ns2:ResponseObject>
<ns3:SiteRef/>
<ns3:ShopOrderRef>
<ns3:ShopOrder>1006928</ns3:ShopOrder>
<ns3:SiteRef>
<ns3:Site>9999</ns3:Site>
</ns3:SiteRef>
</ns3:ShopOrderRef>
</ns2:ResponseObject>
</ns2:ProductionServiceResponse>
</ns2:ProductionOrderUpdateConfirmation_sync>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
Thanks in Advance
Chandan