# Page Not Found

The URL `the-manager/billing/payment-methods/recharge-by-invoice-purchase-order` does not exist.

You might be looking for one of these pages:
- [Recharge by invoice (purchase order)](https://support.simbase.com/billing/payment-methods/recharge-by-invoice-purchase-order.md)
- [Payment Methods](https://support.simbase.com/billing/payment-methods.md)
- [Private vs Public IP address](https://support.simbase.com/fundamentals/ip-addresses/private-vs-public-ip-address.md)
- [Compatibility Check](https://support.simbase.com/device-configuration/compatibility-check.md)
- [How do I set up the APN?](https://support.simbase.com/getting-started/how-do-i-set-up-the-apn.md)

## How to find the correct page

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

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/billing/payment-methods/recharge-by-invoice-purchase-order.md`)
- Use `Accept: text/markdown` header for content negotiation