Async SOAP to Proxy interface using ICO giving error in ECC

Hello Gurus,

I am trying to use ICO for a Async SOAP to Proxy call on ECC. I was able to successfully test the Synchronous calls but the Async call is giving an error in ECC.

I created a XI 3.0 channel on SAP side where I generated Inbound proxy and am trying to save the data to a DB table.

I used the same channel for Sync scenario and it is working without any issue, I am unable to get the Async interface working.

I am getting the following error on ECC side,

  <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

- <!--  Call Integration Server

  -->

- <SAP:Error SOAP:mustUnderstand="1" xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/">

  <SAP:Category>XIProtocol</SAP:Category>

  <SAP:Code area="PARSER">UNEXPECTED_VALUE</SAP:Code>

  <SAP:P1>Main/@versionMajor</SAP:P1>

  <SAP:P2>000</SAP:P2>

  <SAP:P3>003</SAP:P3>

  <SAP:P4 />

  <SAP:AdditionalText />

  <SAP:ApplicationFaultMessage namespace="" />

  <SAP:Stack>XML tag Main/@versionMajor has incorrect value 000; expected value is 003</SAP:Stack>

  <SAP:Retry>M</SAP:Retry>

  </SAP:Error>

Please let me know what could be the issue here.

Thanks,

Paul.