Refund {#pax-aio-payment-txn-refund-task}
=========================================

Use this information to process a refund by referencing the original transaction. You can issue refunds for either the full amount or a partial amount of the original transaction.  
Stand-alone credits are also supported and can be processed independently of a previous transaction. For more information, see [Stand-Alone Credit](/docs/cybs/en-us/pax-all-in-one/integration/all/na/pax-all-in-one/pax-aio-payment-txn-intro/pax-aio-payment-txn-standalone-credit-task.md "").  
Follow these steps to process a refund.

1. Create a `TransactionParameters` object and provide the required information for the payment.

2. Retrieve the `transactionIntent` variable from the `mposUi` object and use the `startActivity` method to initiate the transaction flow.

   ```
   val transactionParameters = TransactionParameters.Builder() 
               .refund("transactionIdentifier") 
            // Specify amount and currency for partial refunds 
            // .amountAndCurrency(BigDecimal("1.00"), Currency.EUR)
               .build() 

   val transactionIntent = mposUi.createTransactionIntent(transactionParameters) 
   startActivityForResult(transactionIntent, MposUi.REQUEST_CODE_PAYMENT)
   ```
3. After the transaction is complete and the Summary screen is dismissed, the `onActivityResult` method is triggered. This action returns information about the last transaction.

   ```
   override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { 
       super.onActivityResult(requestCode, resultCode, data) 
     
       if (requestCode == MposUi.REQUEST_CODE_PAYMENT) { 
           when (resultCode) { 
               // Result code from a successful transaction 
               MposUi.RESULT_CODE_APPROVED -> { 
           val transactionIdentifier = data?.getStringExtra(MposUi.RESULT_EXTRA_TRAN
   SACTION_IDENTIFIER) 
           Toast.makeText(findViewById(android.R.id.content),"Transaction approved!\nIdentifier: $transactionIdentifier",  
   Toast.LENGTH_LONG).show() 
               } 
              // Result code from a declined, aborted or failed transaction 
             MposUi.RESULT_CODE_FAILED -> { 
           Toast.makeText(findViewById(android.R.id.content), "Transaction was declined, aborted, or failed",  
   Toast.LENGTH_LONG).show() 
               } 
           } 
       } 
   }
   ```
4. Get the full transaction object by retrieving the `latestTransaction` property from the mposUi object.  
   


   ```
   val transactionObject = mposUi.latestTransaction
   ```