def tps_purchase_voucher(data):

    transaction = TransactionList.Transaction()
    transaction.transactionTypeId = 4
    transaction.tpsVersionId = 1 #Purchase Voucher transaction type
    transaction.requestId = 'Testing'
    transaction.remarks = "Purchase Voucher"
    transaction.fromAccountId = 35
    transaction.currencyId = settings.DEFAULT_CURRENCY
    transaction.toAccountId = int(data['toAccountId'])
    transaction.amount = float(data['amount'])
    transaction.VoucherParameters.sku = data['sku']
    transaction.VoucherParameters.phoneNumber = data['phoneNumber']

    try:
        urllib_request = urllib2.Request(TPS_SERVER_POST_ADDRESS, transaction.SerializeToString())
        response = urllib2.urlopen(urllib_request).read()
        transaction_response = TransactionResponseList.TransactionResponse()
        transaction_response.ParseFromString(response)
    except Exception as e:
        return False

    return transaction_response.success