Missing order total Paypal express check out

Question

i'm trying to make SOAP call using Salesforce apex code to Paypal express checkout API, but i'm facing this problem missing order total , also i'm sure that i put the order total within my SOAP call , here's my SOAP call form:

<?xml version="1.0" encoding="UTF-8" ?>
<SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
  <SOAP-ENV:Header>
    <RequesterCredentials xmlns="urn:ebay:api:PayPalAPI">
      <Credentials xmlns="urn:ebay:apis:eBLBaseComponents">
        <Username>xxx</Username>
        <Password>xxx</Password>
        <Signature>xxx</Signature>
      </Credentials>
    </RequesterCredentials>
  </SOAP-ENV:Header>
  <SOAP-ENV:Body>
    <SetExpressCheckoutReq xmlns="urn:ebay:api:PayPalAPI">
      <SetExpressCheckoutRequest>
        <Version xmlns="urn:ebay:apis:eBLBaseComponents">78</Version>
        <SetExpressCheckoutRequestDetails>
          <ReturnURL>www.success.com</ReturnURL>
          <CancelURL>www.cancel.com</CancelURL>
          <OrderTotal currencyID="USD">1</OrderTotal>
        </SetExpressCheckoutRequestDetails>            
      </SetExpressCheckoutRequest>
    </SetExpressCheckoutReq>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Answer 1

I found the problem , it's in the SOAP

  string doExpressCheckout = '';
    doExpressCheckout += '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:ebay:api:PayPalAPI" xmlns:urn1="urn:ebay:apis:eBLBaseComponents">';
    doExpressCheckout += '<soapenv:Header>';
    doExpressCheckout += '<urn:RequesterCredentials>';
    doExpressCheckout += '<urn1:Credentials>';
    doExpressCheckout += '<urn1:Username>'+un+'</urn1:Username>';
    doExpressCheckout += '<urn1:Password>'+pw+'</urn1:Password>';
    doExpressCheckout += '<urn1:Signature>'+sig+'</urn1:Signature>';
    doExpressCheckout += '</urn1:Credentials>';
    doExpressCheckout += '</urn:RequesterCredentials>';
    doExpressCheckout += '</soapenv:Header>';
    doExpressCheckout += '<soapenv:Body>';
    doExpressCheckout += '<urn:DoExpressCheckoutPaymentReq>';
    doExpressCheckout += '<urn:DoExpressCheckoutPaymentRequest>';
    doExpressCheckout += '<urn1:Version>'+version+'</urn1:Version>';
    doExpressCheckout += '<urn1:DoExpressCheckoutPaymentRequestDetails>';
    doExpressCheckout += '<urn1:Token>'+token+'</urn1:Token>';
    doExpressCheckout += '<urn1:PayerID>'+payerID+'</urn1:PayerID>';
    doExpressCheckout += '<urn1:PaymentDetails>';
    doExpressCheckout += '<urn1:OrderTotal currencyID="'+UsedCurrency+'">'+amount+'</urn1:OrderTotal>';
    doExpressCheckout += '</urn1:PaymentDetails>';
    doExpressCheckout += '</urn1:DoExpressCheckoutPaymentRequestDetails>';
    doExpressCheckout += '</urn:DoExpressCheckoutPaymentRequest>';
    doExpressCheckout += '</urn:DoExpressCheckoutPaymentReq>';
    doExpressCheckout += '</soapenv:Body>';
    doExpressCheckout += '</soapenv:Envelope>';