> For the complete documentation index, see [llms.txt](https://docs.swiftharbour.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.swiftharbour.com/guest-support-center/guest-help-centre.md).

# Payment Processing

- [Errors when adding a credit card](https://docs.swiftharbour.com/guest-support-center/guest-help-centre/open-edge-help.md)
- [Changing a credit card number](https://docs.swiftharbour.com/guest-support-center/guest-help-centre/adding-your-credit-card-to-a-swift-harbour-booking-stripe.md)