title: 10609 Transaction id is invalid in paypal sandbox
body: <p>I have gone through all the post related to this issue but i didn't find  any specific solutions w.r.t my scenario and after trying these alternatives still the problem persist.</p>
  
  <p>I am using paypal sandbox and below is the response from <code>doExpressCheckout</code> api response which is success.</p>
  
  <pre><code>EC%2d9VU62103VP339240X&amp;
  SUCCESSPAGEREDIRECTREQUESTED=false&amp;
  TIMESTAMP=2015%2d02%2d03T12%3a18%3a36Z&amp;
  CORRELATIONID=7c3edc0fdf0dd&amp;
  ACK=Success&amp;VERSION=119%2e0&amp;
  BUILD=15110743&amp;INSURANCEOPTIONSELECTED=false&amp;
  SHIPPINGOPTIONISDEFAULT=false&amp;
  PAYMENTINFO_0_TRANSACTIONID=61065405X5999873U&amp;
  PAYMENTINFO_0_TRANSACTIONTYPE=expresscheckout&amp;PAYMENTINFO_0_PAYMENTTYPE=instant&amp;
  PAYMENTINFO_0_ORDERTIME=2015%2d02%2d03T12%3a18%3a36Z&amp;PAYMENTINFO_0_AMT=598%2e90&amp;
  PAYMENTINFO_0_FEEAMT=17%2e67&amp;
  PAYMENTINFO_0_TAXAMT=0%2e00&amp;PAYMENTINFO_0_CURRENCYCODE=USD&amp;
  PAYMENTINFO_0_PAYMENTSTATUS=Completed&amp;PAYMENTINFO_0_PENDINGREASON=None&amp;
  PAYMENTINFO_0_REASONCODE=None&amp;PAYMENTINFO_0_PROTECTIONELIGIBILITY=Eligible&amp;
  PAYMENTINFO_0_PROTECTIONELIGIBILITYTYPE=ItemNotReceivedEligible%2cUnauthorizedPaymentEligible&amp;
  PAYMENTINFO_0_SECUREMERCHANTACCOUNTID=B59AFL78MCNRA&amp;PAYMENTINFO_0_ERRORCODE=0&amp;PAYMENTINFO_0_ACK=Success
  </code></pre>
  
  <p>Now i am using the transaction id from this response for calling <code>DoCapture</code> api but i am getting <code>"10609 Transaction id is invalid"</code>. Please note that in paypal the transaction is confirmed and i can see it there.</p>
  
  <p>Below is the request for DoCapture api:</p>
  
  <pre><code>COMPLETETYPE=Complete&amp;AMT=598.9
  &amp;PAYMENTREQUEST_0_PAYMENTACTION=Sale
  &amp;METHOD=DoCapture&amp;
  AUTHORIZATIONID=61065405X5999873U&amp;PAYMENTREQUEST_0_CURRENCYCODE=USD
  &amp;VERSION=119.0&amp;
  USER=xxxxxxxxxxxxxxxxx
  PWD=xxxxxxxxx&amp;
  SIGNATURE=xxxxxxxxx
  </code></pre>
  
  <p>Response:</p>
  
  <blockquote>
    <p>AUTHORIZATIONID=61065405X5999873U&amp;TIMESTAMP=2015%2d02%2d03T11%3a36%3a42Z&amp;CORRELATIONID=233e0f1acfe90&amp;ACK=Failure&amp;VERSION=119%2e0&amp;BUILD=15110743&amp;L_ERRORCODE0=10609&amp;L_SHORTMESSAGE0=Invalid%20transactionID%2e&amp;L_LONGMESSAGE0=Transaction%20id%20is%20invalid%2e&amp;L_SEVERITYCODE0=Error</p>
  </blockquote>
  
  <p>Please provide your valuable suggestions.</p>