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

I believe lt is shorthand for less than or "<"  symbol.

The proper escaping for this symbol in a node value is: &lt;

something is wrong here: <ibn220 xmlns="">ibn220.ang.pbd.ntrs.com/">

I believe lt is shorthand for less than or "<"  symbol.

The proper escaping for this symbol in a node value is: &lt;

something is wrong here: <ibn220 xmlns="">ibn220.ang.pbd.ntrs.com/">

Sorry I probably pasted the wrong soap request in my last post.

The below is the correct one. I got the same error with this SOAP request.

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <soapenv:Header>
    <wsse:Security xmlns:wsse="http://schemas.xmlsoap.org/ws/2002/07/secext" soapenv:mustUnderstand="1">
      <wsse:UsernameToken>
         <wsse:Username>EFGER</wsse:Username>
         <wsse:Password>XXXXX</wsse:Password>
       </wsse:UsernameToken>
    </wsse:Security>
   </soapenv:Header>
   <soapenv:Body>
     <ibn220 xmlns="http://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>

I have tried to use this example SOAP request in  https://community.appian.com/w/the-appian-playbook/86/advanced-soap-web-service-configuration, and got the same error.

<soapenv:Envelope
  xmlns:xsi="">www.w3.org/.../XMLSchema-instance"
  xmlns:xsd="">www.w3.org/.../XMLSchema"
  xmlns:soapenv="">schemas.xmlsoap.org/.../"
  xmlns:urn="urn:examples:helloservice">
  <soapenv:Body>
    <urn:sayHello
      soapenv:encodingStyle='schemas.xmlsoap.org/.../'>
      <firstName xsi:type='xsd:string'>John</firstName>
    </urn:sayHello>
  </soapenv:Body>
</soapenv:Envelope>