title: what are the differnt in <req:xxx> and <ns1:xxx> in SOAP request
body: <p>Can anybody explain the difference between <code>&lt;req:xxx&gt;</code> and <code>&lt;ns1:xxx&gt;</code> usage in soap request xml schema .?</p>
  
  <p>eg:- </p>
  
  <p><strong>1st SOAP request XML Schema</strong></p>
  
  <pre><code>  &lt;soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:req="http://olp.bank.com/payement/service/olppaymentmanager/req"&gt;
     &lt;soapenv:Header/&gt;
     &lt;soapenv:Body&gt;
        &lt;req:initiatePaymentDetailsReq&gt;
           &lt;olpIdAlias&gt;****&lt;/olpIdAlias&gt;
           &lt;merchantId&gt;****&lt;/merchantId&gt;
           &lt;merchantRefNum&gt;234324&lt;/merchantRefNum&gt;
           &lt;paymentAmount&gt;200&lt;/paymentAmount&gt;
           &lt;paymentCurrency&gt;SAR&lt;/paymentCurrency&gt;
           &lt;dynamicMerchantLandingURL&gt;&lt;/dynamicMerchantLandingURL&gt;
           &lt;dynamicMerchantFailureURL&gt;&lt;/dynamicMerchantFailureURL&gt;
        &lt;/req:initiatePaymentDetailsReq&gt;
     &lt;/soapenv:Body&gt;
  &lt;/soapenv:Envelope&gt;
  </code></pre>
  
  <p><strong>2nd XML Request schema</strong></p>
  
  <pre><code>&lt;SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:brsmembersapi" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"&gt;
    &lt;SOAP-ENV:Body&gt;
      &lt;ns1:ValidateMemberLogin&gt;
        &lt;login xsi:type="ns1:LoginCredentials"&gt;
          &lt;clientAPIVersion xsi:type="xsd:int"&gt;0&lt;/clientAPIVersion&gt;
          &lt;username xsi:type="xsd:string"&gt;someapiusername&lt;/username&gt;
          &lt;password xsi:type="xsd:string"&gt;someapipassword&lt;/password&gt;
        &lt;/login&gt;
        &lt;memberLogin xsi:type="ns1:MemberLoginCredentials"&gt;
          &lt;username xsi:type="xsd:string"&gt;somememberusername&lt;/username&gt;
          &lt;password xsi:type="xsd:string"&gt;somememberpassword&lt;/password&gt;
        &lt;/memberLogin&gt;
        &lt;/ns1:ValidateMemberLogin&gt;
    &lt;/SOAP-ENV:Body&gt;
  &lt;/SOAP-ENV:Envelope&gt;
  </code></pre>
  
  <p>in first soap request using <code>&lt;req:&gt;</code> eg:-<code>&lt;req:initiatePaymentDetailsReq&gt;</code> in second soap request <code>&lt;ns1:&gt;</code> eg:-<code>&lt;ns1:ValidateMemberLogin&gt;</code>
  what are the diffrent between them.? </p>