SAP NW GW - Error while parsing an XML stream: 'BOM / charset detection failed'

Hello Experts,

For a customer project, we have to implement a Sales Order Creation in OData. I created a Gateway project based on the BAPI_SALESORDER_CREATE2. I created the 3 entities I need (Header, Item and Partner).

I tested the BAPI with my data and everything is fine.

Now I tried to test it through the GW_CLIENT.

I got already a lot of errors that I was able to correct with SCN messages (thanks a lot !) but now I have a 'Error while parsing an XML stream: 'BOM / charset detection failed'.

I understood something is wrong with my XML file but the "Check XML" is ok and I have no idea what can be wrong in my simple XML test file !

Any help is appreciated.

Here is the file:

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

<entry xml:base="http://xx/sap/opu/odata/sap/Z_SALESORDER_CREATE2_SRV/" xmlns="http://www.w3.org/2005/Atom" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices">

<link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/OrderSalesHeader" type="application/atom+xml;type=feed" title="Z_SALESORDER_CREATE2_SRV.OrderSalesHeader">

  <m:inline>

   <feed>

    <entry>

     <content type="application/xml">

      <m:properties>

       <d:DocType>TA</d:DocType>

       <d:SalesOrg>1100</d:SalesOrg>

       <d:DistrChan>01</d:DistrChan>

       <d:Division>01</d:Division>

      </m:properties>

     </content>

    </entry>

   </feed>

  </m:inline>

</link>

<link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/HeaderItem" type="application/atom+xml;type=feed" title="Z_SALESORDER_CREATE2_SRV.HeaderToItem">

  <m:inline>

   <feed>

    <entry>

     <content type="application/xml">

      <m:properties>

       <d:Material>AIGL0232</d:Material>

       <d:TargetQu>100</d:TargetQu>

      </m:properties>

     </content>

    </entry>

   </feed>

  </m:inline>

</link>

<link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/HeaderPartner" type="application/atom+xml;type=feed" title="Z_SALESORDER_CREATE2_SRV.HeaderToPartner">

  <m:inline>

   <feed>

    <entry>

     <content type="application/xml">

      <m:properties>

       <d:PartnRole>SP</d:PartnRole>

       <d:PartnNumb>YOU001</d:PartnNumb>

      </m:properties>

     </content>

    </entry>

   </feed>

  </m:inline>

</link>

</entry>

Thanks,

Luc