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Processing a Stand-Alone Credit

This section describes how to process a stand-alone credit. A stand-alone credit is used to process a credit without reference to the original transaction. The customer is required to present their card for this type of transaction.
When processing a stand-alone credit, there is no limit on the credit amount because there is no reference to the original transaction amount. The recommendation is to use a refund transaction whenever possible. For more information, see Processing a Refund.
Follow these steps to process a stand-alone credit:
  1. Create a
    TransactionParameters
     object and provide the required information for the payment.
  2. Retrieve the
    transactionIntent
     from the
    mposUi
     object and use the
    startActivity
     method to initiate the transaction flow.
    val transactionParameters = TransactionParameters.Builder() 
            .refund(BigDecimal("1.00"), Currency.EUR)     
            .customIdentifier("yourReferenceForTheTransaction")  
            .build() 
 
val transactionIntent = mposUi.createTransactionIntent(transactionParameters) 
startActivityForResult(transactionIntent, MposUi.REQUEST_CODE_PAYMENT)
  3. After the transaction is completed and the Summary screen is dismissed,
    onActivityResult
     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_TRANSACTION_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. You can get the full transaction object by retrieving the
    latestTransaction
     from the mposUi object.
    
 
    val transactionObject = mposUi.latestTransaction