# Partner Support

> Partner Support knowledge base – help articles and documentation.

## Disputes

- [Disputes and refunds](https://merchant-help.us.zip.co/en_us/disputes-and-refunds-HkYb9tTnel.md): How to resolve disputes and handle refunds  Orders with active disputes  When a payment is disputed the cardholders bank issues a refund to the customer and t
- [Dispute withdrawals](https://merchant-help.us.zip.co/en_us/dispute-withdrawals-SyRM5tahee.md): Learn about what it means when a cardholder withdraws their payment dispute   The most effective dispute strategy for your business is to  reduce the number of 
- [Dispute categories](https://merchant-help.us.zip.co/en_us/dispute-categories-rkeVcY6hxg.md): Learn more about the reasons for disputes and how to respond to each   Each card network defines hundreds of specific codes representing very granular dispute 
- [Responding to disputes](https://merchant-help.us.zip.co/en_us/responding-to-disputes-ByoL9Yp2le.md): Learn how to effectively respond to disputes   When a cardholder files a dispute against a payment their bank alerts Zip and Zip notifies you via email and in
- [How disputes work](https://merchant-help.us.zip.co/en_us/how-disputes-work-B1hdcta2gl.md): Learn about the high level lifecycle of payment card disputes   A dispute occurs when an account owner contacts their bank to contest a payment to you for a nu
- [Dispute response best practices](https://merchant-help.us.zip.co/en_us/dispute-response-best-practices-HyY25tangx.md): Learn how to format the most convincing evidence to challenge a dispute   When a cardholder disputes a payment with their bank they must provide evidence to s