gistfile1.txt

SOAP::FaultError: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at PayloadzWS.TransactionCreation(String APIUserName, String APIUserPassword, String APISignature, String[] item_number, String[] item_name, Double[] item_price, Int32[] quantity, Double mc_gross, String mc_currency, String payer_email, Boolean flag_txn_id, String txn_id, String business, Double mc_fee, String invoice, String receipt_id, String custom, Double settle_amount, String settle_currency, Double exchange_rate, String first_name, String last_name, String address_street, String address_status, String address_city, String address_state, String address_zip, String address_country, String address_country_code)
   --- End of inner exception stack trace ---
        from #<SOAP::Mapping::Object:0x1a3b17c>