# Page Not Found

The URL `how-tos/placing-orders/payments/braintree/sending-back-the-payment-method-nonce` does not exist.

You might be looking for one of these pages:
- [External payment gateways](https://docs.commercelayer.io/core/external-resources/external-payment-gateways.md)
- [External shipping costs](https://docs.commercelayer.io/core/external-resources/external-shipping-costs.md)
- [External promotions](https://docs.commercelayer.io/core/external-resources/external-promotions.md)
- [External tax calculators](https://docs.commercelayer.io/core/external-resources/external-tax-calculators.md)
- [Revoking a token](https://docs.commercelayer.io/core/authentication/revoking-a-token.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.commercelayer.io/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.commercelayer.io/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/core/external-resources/external-payment-gateways.md`)
- Use `Accept: text/markdown` header for content negotiation