Confirmation Code

Hello,

Once my customer makes a payment to their account, I would like to send an email to them with a confirmation code to reference the transaction. I'm not sure what information is acceptable to provide in the return JSON payload or if I need to manually create a paper trail on my end (which I hope that isn't the case...)

{
"method": "{string}",
"amount": "{string}",
"currency": "{string}",
"avs": "{string}",
"cvv2": "{string}",
"card": {
"type": "{string}",
"cardholder_name": "{string}",
"card_number": "{string}",
"exp_date": "{string}"
},
"token": {
"token_type": "{string}",
"token_data": {
"value": "{string}"
}
},
"transaction_status": "{string}",
"validation_status": "{string}",
"transaction_type": "{string}",
"transaction_id": "{string}",
"transaction_tag": "{string}",
"bank_resp_code": "{string}",
"bank_message": "{string}",
"gateway_resp_code": "{string}",
"gateway_message": "{string}",
"correlation_id": "{string}"
}