Basic Payment operations

Processing process

1. In the first step it is needed to execute the payment at the terminal, this is possible using script commands:

   • cardPayment

   • cardPayment2

   • cardRefund

2. The payment command is executed and in case of:

• error - error code is returned

• completion of a payment transaction - the resulting error code is returned and all information about the payment operation are stored internally (payment details, receipts for the merchant and the customer). Information about the payment is stored persistently.

3. Subsequently, it is necessary to read or print the receipts: for this you can use the commands:

   • cardGetMerchantParagon

   • cardGetCustomerParagon

   • cardGetAllConfirmations

   • cardPrintMerchantParagon

   • cardPrintCustomerParagon

   • cardPrintAllConfirmations

4. After printing/reading the receipt is this receipt deleted from the memory.

For the commands:

• cardGetMerchantParagon

• cardGetCustomerParagon

• cardPrintMerchantParagon

• cardPrintCustomerParagon

applies that the oldest receipt is always read. This means that if the receipts are not read continuously they will accumulate in the memory. It is therefore recommended to read/print all previous receipts using command cardPrintAllConfirmations / cardGetAllConfirmations before invoking payment functions.

Typical use

1. cardPayment2: // Executes the payment

2. cardGetMerchantParagon: // Reads the last receipt and deletes it from the memory

3. cardGetCustomerParagon: // Reads the last receipt and deletes it from the memory

4. cardGetLastReceipt: // Returns compelete information about the last payment. In case that cardPayment is executed, we will get information about the payment that was made in the step 1.