Hi All

This is my code

public class pay
 {
 public void transefer()
{
 Http h = new Http();
 HttpRequest req = new HttpRequest();
 //String url1 = 'https://api-3t.sandbox.paypal.com/2.0/';
 
 String url='https://svcs.sandbox.paypal.com/AdaptivePayments/Pay ';
 string un='radhik_1310032695_biz_api1.dskvap.com';
 //string un='radhik_1311331870_per@dskvap.com';
 //string pw='311331850';
 string pw='1310032746';
   string sig ='ALIeMNX23qxDxiFSuqGvrVD7fZmrAiLQwRfHOZzphVWLml57Bz8XsGA5';

 string body='<?xml version="1.0" encoding="utf-8" ?>';
body+='<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:xsd="http://www.w3.org/1999/XMLSchema">';
 body+='<SOAP-ENV:Header><RequesterCredentials xmlns="urn:ebay:api:PayPalAPI">';
body+='<Credentials xmlns="urn:ebay:apis:eBLBaseComponents">';
body+='<Username>'+un+'</Username><Password>'+pw+'</Password><Signature>'+sig+'</Signature>';
body+='</Credentials></RequesterCredentials></SOAP-ENV:Header>';
body+='<SOAP-ENV:Body><PayRequest xmlns="http://svcs.paypal.com/types/ap">';
 body+='<actionType xmlns="">PAY</actionType>';
 body+='<requestEnvelope xmlns=""><errorLanguage>en_US</errorLanguage></requestEnvelope>';
 body+='<cancelUrl xmlns="">http://www.xchaos.co.uk</cancelUrl>';
body+='<currencyCode xmlns="">USD</currencyCode><feesPayer xmlns="">EACHRECEIVER</feesPayer>';
 body+='<receiverList xmlns=""> <receiver><amount>100</amount><email>radhik_1311331396_biz@dskvap.com</email></receiver></receiverList>';
 body+='<clientDetails><ipAddress>183.82.96.26</ipAddress><applicationId>APP-80W284485P519543T</applicationId></clientDetails>';
  body+=' <ipnNotificationUrl>http://www.xchaos.co.uk</ipnNotificationUrl>';
     // body+='<trackingId>1234</trackingId>';
 
      body+='<returnUrl xmlns="">http://www.xchaos.co.uk</returnUrl>';
    body+='</PayRequest>';
    
  body+='</SOAP-ENV:Body>';
  
body+='</SOAP-ENV:Envelope>';
 
   req.setBody(body);
  req.setEndpoint(url);
  //req.setEndpoint(url1);
  req.setMethod('POST');
  req.setHeader('Content-length', '1753' );
  req.setHeader('Content-Type', 'text/xml;charset=UTF-8'); 
  req.setHeader('SOAPAction','');
  req.setHeader('Host','api-aa.sandbox.paypal.com');
  HttpResponse res =h.send(req);
  String xml = res.getBody();
  system.debug('----------'+res.getbody());
   
}
 
}

 i am getting errors like wuthorization failed invalid username and password,even i gave valid credentials

thank you in advance

rajesh