How do I defend a dispute?
The reason code categories for disputes raised by cardholders determine whether you have a chance to defend the dispute or if it will result in an automatic chargeback. Always adhere to the instructions from Wpay regarding retrievals or chargebacks and submit your responses by the specified deadlines.
When you seek to challenge a dispute, provide as much detail as possible to support your case and increase the chances of a positive outcome.
An email will be sent to your merchant’s email address or in the case of sub-merchants being serviced by a Payfac, the email will be sent to the Payfac’s email address. The merchant or sub-merchant (in the case of Payfac) should send their response to the Dispute Resolution Team contact details: disptrns@wpay.com.au

Please consult the relevant Scheme guides (see Scheme links below) for the complete list of dispute reason codes and suggested evidence to challenge a dispute effectively.
Detailed below are common dispute reasons and suggested evidence to respond with..
For Card Present transaction disputes
| Dispute Reason | Description | Required Actions |
|---|---|---|
| No Authorisation / Fraud / Declined Authorisation / Copy of Authority / Counterfeit Fraud |
A customer claims they did not authorise or participate in the transaction. This can result from:
|
Obtain a copy of the invoice/receipt for the transaction and forward it to the Disputes Resolution Team. For Store And Forward (SAF) transactions, ensure to include a signed copy of the receipt. |
| Duplicate Processing |
A customer claims they were charged twice or more for a single transaction. This occurs when:
|
|
| Incorrect Amount |
The customer claims the amount charged was wrong because:
|
|
**For Card Not Present transaction disputes**
| Dispute Reason | Description | Required Actions |
|---|---|---|
| Services not provided / Merchandise not received | A customer claims they did not receive all or part of the goods/services purchased. This can be due to non-delivery, lost goods, partial delivery, or the customer forgetting the purchase. |
|
| Not as described / Defective Merchandise | The customer claims the received goods/services were different from the online description or were damaged/defective. |
|
| No authorisation / Fraud (Card Absent) | The customer claims they did not authorise the online transaction, often due to a stolen card or not recognizing the purchase. |
|
| Duplicate Processing / Incorrect Amount | The cardholder disputes the transaction, stating it was processed more than once or the amount charged was incorrect. |
|
“Compelling evidence” disputes process
Schemes have introduced new processes allowing merchants to provide additional types of evidence during pre-arbitration in cases where the cardholder took part in the transaction.
This can help to reduce chargeback losses related to ‘friendly fraud’ also known as ‘first party fraud’. ‘Friendly fraud’ is when a customer raises a chargeback claiming they don’t recognise the purchase, but then keeps the goods while the charge gets reimbursed.
If ‘compelling evidence’ is provided and flagged in the dispute response the card issuer must attempt to contact the customer with the new information and discuss why they feel a dispute is still valid.
This process applies to the following dispute categories raised in the dispute by the issuing bank:
- Dispute category 10.4 (Other Fraud – Card Absent Environment)
- Dispute category 4837 (No cardholder authorisation)
Allowable compelling evidence
- Evidence, such as photographic or email evidence to prove a link between the person receiving the merchandise or services and the Cardholder, or to prove that the Cardholder disputing the Transaction is in possession of the merchandise and/or is using the merchandise or services.
- For a Card-Absent Environment Transaction in which the merchandise is collected from the Merchant location, any of the following:
– Cardholder signature on the pick-up form
– Copy of identification presented by the Cardholder
– Details of identification presented by the Cardholder - For an Electronic Commerce Transaction representing the sale of digital goods downloaded from a Merchant’s website or application, description of the merchandise or services successfully downloaded, the date and time such merchandise or services were downloaded, and two or more of the following:
– Purchaser’s IP address and the device geographical location at the date and time of the Transaction
– Device ID number and name of device (if available)
– Purchaser’s name and email address linked to the customer profile held by the Merchant - Evidence that the profile set up by the purchaser on the Merchant’s website or application was accessed by the purchaser and has been successfully verified by the Merchant before the Transaction Date
– Evidence that the Merchant’s website or application was accessed by the Cardholder for merchandise services on or after the Transaction Date
– Evidence that the same device and Card used in the disputed Transaction were used in any previous Transaction that was not disputed - For a Transaction in which merchandise was delivered to a business address, evidence that the merchandise was delivered and that, at the time of delivery, the Cardholder was working for the company at that address. A signature is not required as evidence of delivery.
- For a Mail/Phone Order Transaction, a signed order form.
- For a Card-Absent Environment Transaction, evidence that 3 or more of the following had been used in an undisputed Transaction:
- Customer account/login ID
- Delivery address
- Device ID/device fingerprint
- Email address
- IP address
- Telephone number
- Evidence that the Transaction was completed by a member of the Cardholder’s household or family
- Evidence of one or more non-disputed payments for the same merchandise or service
- For a Recurring Transaction, evidence of all of the following:
- A legally binding contract held between the Merchant and the Cardholder
- The Cardholder is using the merchandise or services
- A previous Transaction that was not disputed
Scheme links
Mastercard Chargeback Guide: https://www.mastercard.us/content/dam/public/mastercardcom/na/global-site/documents/chargeback-guide.pdf
Visa Dispute Resolution Guide: https://www.visa.com.au/content/dam/VCOM/download/merchants/chargeback-management-guidelines-for-visa-merchants.pdf
Amex Chargeback Guide:
https://www.americanexpress.com/content/dam/amex/au/en/merchant/static/chargebackcodeguide.pdf