# Page Not Found

The URL `plugins/authentication` does not exist.

You might be looking for one of these pages:
- [Authentication](https://help.checkoutchamp.com/crm/plugins/authentication.md)
- [PAAY](https://help.checkoutchamp.com/crm/plugins/authentication/paay.md)
- [Identity Verification](https://help.checkoutchamp.com/crm/plugins/identity-verification.md)
- [PAAY 3RI](https://help.checkoutchamp.com/crm/plugins/authentication/paay-3ri.md)
- [API Documentation](https://help.checkoutchamp.com/api-documentation/api-documentation.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/crm/plugins/authentication.md`)
- Use `Accept: text/markdown` header for content negotiation