Note: This is version 1 of the PayPal Commerce Platform (for integrations before February 2019).

New customers should integrate version 2. For more information, contact your PayPal account manager.

Occasionally, something goes wrong with a customer's order. You may want to cancel a payment or issue a refund. Sellers or buyers can dispute charges by filing a case with PayPal, their bank, or their credit card company to reverse charges, or chargeback.