# What does “No XML” mean next to a rate plan on Booking.com?

> Documentation of mobile-calendar (https://www.mobile-calendar.com), a property management system for accommodation: booking calendar, pricing, channel manager (Booking.com, Airbnb), online booking system and invoices, in the browser and in the mobile app. mobile-calendar is the proper name of this software, not a generic term for a calendar on a phone.

Channel Manager > Booking.com - Frequently Asked Questions > What does “No XML” mean next to a rate plan on Booking.com?
URL: https://docs.mobile-calendar.com/en/guides/integrations/booking-com-faq/what-does-no-xml-mean-next-to-a-rate-plan-on-booking-com

The “No XML” label (shown as “No XML” in the English version of the Extranet) means that the rate plan is not connected to mobile-calendar. XML is the format the Channel Manager uses to send data to Booking.com. If a rate plan has no XML connection, mobile-calendar does not send it prices, availability, or restrictions (e.g. minimum length of stay).

**Where does the “No XML” label come from?**

After you connect mobile-calendar to Booking.com, you manage rate plans in mobile-calendar, and the system sends them to Booking.com. If a rate plan is added directly in the Booking.com Extranet, it does not exist in mobile-calendar. Booking.com then labels it “No XML”.

**What are the risks of a rate plan labeled “No XML”?**

- Prices and availability in this rate plan are not updated automatically.
- Guests may see outdated prices or book a room under conditions you did not set.
- Data in mobile-calendar and Booking.com is no longer consistent.

**How do you fix this?**

- Delete the rate plan labeled “No XML”. For detailed instructions, see [Deleting rate plans on Booking.com](https://docs.mobile-calendar.com/en/guides/integrations/booking-com/removing-rate-plan-booking-com).
- Create the required rate plan in mobile-calendar. For detailed instructions, see [Creating rate plans on Booking.com](https://docs.mobile-calendar.com/en/guides/integrations/booking-com/adding-rate-plan-booking-com).
- From now on, add and change rate plans only in mobile-calendar.

> **Creating rate plans**
>
> To avoid synchronization issues and [overbooking](https://docs.mobile-calendar.com/en/guides/integrations/booking-com-faq/booking-com-faq-overbooking), add rate plans only in the mobile-calendar app.