Got Invalid Symbol Found (lt) error for calling SOAP service

Got Invalid Symbol Found (lt) error after pasting the SOAP request to the Request Body field in the Integration object config screen. The same SOAP request works in SOAPUI. Plz shed some light on this. 

<soapenv:Envelope xmlns:soapenv="">schemas.xmlsoap.org/.../" xmlns:xsd="">www.w3.org/.../XMLSchema" xmlns:xsi="">www.w3.org/.../XMLSchema-instance">
  <soapenv:Header>
    <wsse:Security xmlns:wsse="">schemas.xmlsoap.org/.../secext" soapenv:mustUnderstand="1">
      <wsse:UsernameToken>
         <wsse:Username>aaaa</wsse:Username>
         <wsse:Password>ddddd</wsse:Password>
       </wsse:UsernameToken>
    </wsse:Security>
   </soapenv:Header>
   <soapenv:Body>
     <ibn220 xmlns="">ibn220.ang.pbd.ntrs.com/">
       <ibn220Req>
         <function>F5</function>
         <reqType />
         <qualType>M11</qualType>
         <reqQuan>1</reqQuan>
         <arxMain>0</arxMain>
         <acctType />
         <acctNo />
         <appl>LNS</appl>
         <bank>465</bank>
      </ibn220Req>
    </ibn220>
  </soapenv:Body>
</soapenv:Envelope>

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