POST api/v1/payments/creditcard/refund

{
  "Authentication": {
    "Id": "170200123",
    "Key": "467512342123"
  },
  "Request": {
    "TransactionType": "(0 - authorize, 1 - charge, 2 - refund)",
    "Card": {
      "CardNumber": "4000000000000001",
      "ExpiryDate": "12/19 (MM/YY)",
      "CVV": "123 (3 or 4 digits, depending upon card scheme)"
    },
    "CaptureMethod": "(2 - ecommerce)",
    "BillingAddress": {
      "HouseNumber": "123 (optional)",
      "ApartmentNumber": "4A (optional)",
      "Street": "Welling Ave (optional)",
      "Street2": "Houseblocks (optional)",
      "City": "Saverton (optional)",
      "Zip": "90001",
      "County": "King (optional)",
      "State": "WA (optional)",
      "Country": "USA",
      "CountryName": null,
      "Country2AlphaCode": null,
      "Country3AlphaCode": null,
      "CountryNumericCode": null
    },
    "TransactionDateTime": "2025-11-15 12:22:42 (YYYY-MM-DD HH:MM:SS - UTC format)",
    "Amount": "20.50 (include decimal places)",
    "CurrencyCode": "USD (see ISO 4217 for correct currency codes)",
    "TransactionReference": "2343-0988 (unique for each transaction)",
    "Description": "Booking for workstation 23A (free form text)",
    "DealType": null,
    "DealStage": null,
    "Email": "larry@newmedia.com (cardholder's email address)",
    "Authorizer": "Secondhand Bank (use your approved authorizer)",
    "Discount": {
      "DiscountCode": "1234",
      "Product": "Storage"
    },
    "Marketing": null,
    "RevenuePartner": null,
    "Name": null,
    "SaveToFile": "true/false"
  }
}

<CardTransactionBindingModel xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Payments.Api.Models">
  <Authentication>
    <Id>170200123</Id>
    <Key>467512342123</Key>
  </Authentication>
  <Request>
    <Amount>20.50 (include decimal places)</Amount>
    <Authorizer>Secondhand Bank (use your approved authorizer)</Authorizer>
    <BillingAddress>
      <ApartmentNumber>4A (optional)</ApartmentNumber>
      <City>Saverton (optional)</City>
      <Country>USA</Country>
      <Country2AlphaCode i:nil="true" />
      <Country3AlphaCode i:nil="true" />
      <CountryName i:nil="true" />
      <CountryNumericCode i:nil="true" />
      <County>King (optional)</County>
      <HouseNumber>123 (optional)</HouseNumber>
      <State>WA (optional)</State>
      <Street>Welling Ave (optional)</Street>
      <Street2>Houseblocks (optional)</Street2>
      <Zip>90001</Zip>
    </BillingAddress>
    <CaptureMethod>(2 - ecommerce)</CaptureMethod>
    <Card>
      <CVV>123 (3 or 4 digits, depending upon card scheme)</CVV>
      <CardNumber>4000000000000001</CardNumber>
      <ExpiryDate>12/19 (MM/YY)</ExpiryDate>
    </Card>
    <CurrencyCode>USD (see ISO 4217 for correct currency codes)</CurrencyCode>
    <DealStage i:nil="true" />
    <DealType i:nil="true" />
    <Description>Booking for workstation 23A (free form text)</Description>
    <Discount>
      <DiscountCode>1234</DiscountCode>
      <Product>Storage</Product>
    </Discount>
    <Email>larry@newmedia.com (cardholder's email address)</Email>
    <Marketing i:nil="true" />
    <Name i:nil="true" />
    <RevenuePartner i:nil="true" />
    <SaveToFile>true/false</SaveToFile>
    <TransactionDateTime>2025-11-15 12:22:42 (YYYY-MM-DD HH:MM:SS - UTC format)</TransactionDateTime>
    <TransactionReference>2343-0988 (unique for each transaction)</TransactionReference>
    <TransactionType>(0 - authorize, 1 - charge, 2 - refund)</TransactionType>
  </Request>
</CardTransactionBindingModel>

{
  "Message": {
    "Code": "(2 digit code reflecting result of request - 00 is good)",
    "Description": "(Message response in text depending upon request/result of request)"
  },
  "Response": {
    "ResponseCode": "(1 - approved, 2 - declined, 3 - error, 4 - held for review, )",
    "ResponseCodeText": "(Approved/Declined/Referred/Error/Error message)",
    "AuthCode": "B800ZS1 (no value for refunds or voids)",
    "AvsResultCode": "(A - address (street) matches, zip does not, B - address information not provided for avs check, E - avs error, G - non-u.s. card issuing bank, N - no match on address (street) or zip, P - avs not applicable for this transaction, R - retry—system unavailable or timed out, S - service not supported by issuer, U - address information is unavailable, W - nine digit zip matches, address (street) does not, X - address (street) and nine digit zip match, Y - address (street) and five digit zip match, Z - five digit zip matches, address (street) does not)",
    "CvvResultCode": "(M - match, N - no match, P - not processed, S - should have been present, U - issuer unable to process request)",
    "TransactionReference": "2343-0988 (will match your transaction reference)",
    "TransactionID": "3212345 (must be used in follow up requests regarding this transaction)",
    "CardType": "Visa (text stating the card type of the card used)",
    "DiscountedAmount": "0.00",
    "CustomerId": null,
    "ProfileId": null
  }
}

<CardTransactionOutgoingModel xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Payments.Api.Models">
  <Message>
    <Code>(2 digit code reflecting result of request - 00 is good)</Code>
    <Description>(Message response in text depending upon request/result of request)</Description>
  </Message>
  <Response>
    <AuthCode>B800ZS1 (no value for refunds or voids)</AuthCode>
    <AvsResultCode>(A - address (street) matches, zip does not, B - address information not provided for avs check, E - avs error, G - non-u.s. card issuing bank, N - no match on address (street) or zip, P - avs not applicable for this transaction, R - retry—system unavailable or timed out, S - service not supported by issuer, U - address information is unavailable, W - nine digit zip matches, address (street) does not, X - address (street) and nine digit zip match, Y - address (street) and five digit zip match, Z - five digit zip matches, address (street) does not)</AvsResultCode>
    <CardType>Visa (text stating the card type of the card used)</CardType>
    <CustomerId i:nil="true" />
    <CvvResultCode>(M - match, N - no match, P - not processed, S - should have been present, U - issuer unable to process request)</CvvResultCode>
    <DiscountedAmount>0.00</DiscountedAmount>
    <ProfileId i:nil="true" />
    <ResponseCode>(1 - approved, 2 - declined, 3 - error, 4 - held for review, )</ResponseCode>
    <ResponseCodeText>(Approved/Declined/Referred/Error/Error message)</ResponseCodeText>
    <TransactionID>3212345 (must be used in follow up requests regarding this transaction)</TransactionID>
    <TransactionReference>2343-0988 (will match your transaction reference)</TransactionReference>
  </Response>
</CardTransactionOutgoingModel>