> ## Documentation Index
> Fetch the complete documentation index at: https://docs.roomdoo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PMS glossary

> Quick definitions for the hotel and PMS terms used across Roomdoo and its documentation.

## Core terms

<AccordionGroup>
  <Accordion title="PMS (Property Management System)">
    Hotel management software. Roomdoo is a PMS — it manages reservations, invoicing, planning, check-in/out and communication with other systems.
  </Accordion>

  <Accordion title="Planning">
    Calendar-style view showing every reservation at the property crossed with the rooms. Lets you drag and drop reservations, see availability and blocks. See [Planning colours](/en/reservations/planning-colors).
  </Accordion>

  <Accordion title="Folio">
    Guest's charge account during the stay. Groups room, consumed services, payments and, when closed, becomes the invoice.
  </Accordion>

  <Accordion title="Booking reference / Locator">
    Unique alphanumeric code for each reservation. The reference you use when talking about a specific reservation with support or with a guest.
  </Accordion>

  <Accordion title="Pax">
    People. "A 2-pax reservation" = a reservation for 2 people. Used to avoid confusion with "rooms".
  </Accordion>

  <Accordion title="ADR (Average Daily Rate)">
    Average daily rate: room revenue / rooms sold. Key metric for INE reporting and revenue analysis.
  </Accordion>

  <Accordion title="RevPAR (Revenue Per Available Room)">
    Revenue per available room. Combines occupancy and ADR. Measures the commercial health of the property.
  </Accordion>
</AccordionGroup>

## Sales channels and integrations

<AccordionGroup>
  <Accordion title="OTA (Online Travel Agency)">
    Online travel agency: Booking, Expedia, Airbnb, Hotelbeds, Despegar, etc. They sell your inventory on commission.
  </Accordion>

  <Accordion title="Channel Manager">
    Intermediary system that distributes availability and prices from your PMS to every OTA and collects their reservations. Roomdoo primarily uses **Wubook** (sometimes Neobookings). See [OTA synchronisation](/en/channel-manager/ota-sync).
  </Accordion>

  <Accordion title="Mapping / Room mapping">
    Association between Roomdoo rooms and the rooms each OTA sees. Broken mapping means an OTA sells the wrong room — or doesn't sell it at all.
  </Accordion>

  <Accordion title="Overbooking">
    When two channels sell the same room at the same time. Common during fast-selling peaks or sync failures. See [OTA synchronisation](/en/channel-manager/ota-sync).
  </Accordion>

  <Accordion title="Allotment">
    Rooms allocated for sale on a channel. If Roomdoo gives 10 to Booking on a date and a different allotment to Expedia, that's the split.
  </Accordion>
</AccordionGroup>

## Rates and availability

<AccordionGroup>
  <Accordion title="Rate plan">
    Pricing configuration for a room type. Can include restrictions (min/max stay, allowed arrivals/departures) and policies (cancellation, prepay). See [Create / update rates](/en/rates/create-update-rates).
  </Accordion>

  <Accordion title="Restriction">
    Sales-limiting rule: min/max stay, closed to arrival, closed to departure, closed (no sales). See [Availability and restrictions](/en/rates/availability-restrictions).
  </Accordion>

  <Accordion title="BAR (Best Available Rate)">
    Lowest publicly available rate — what a user sees without promotions.
  </Accordion>

  <Accordion title="Tourist tax (Ecotasa)">
    Local levy per night and per person (Balearic Islands, Catalonia, Santiago de Compostela, A Coruña, etc.). Calculated automatically on the invoice when configured. See [Tourist taxes](/en/rates/tourist-taxes).
  </Accordion>
</AccordionGroup>

## Compliance

<AccordionGroup>
  <Accordion title="VeriFactu">
    Mandatory AEAT (Spanish tax authority) system for sending invoices. Each invoice is chained with the previous one. Required for companies from 01/01/2027 and for self-employed from 01/07/2027. See [VeriFactu](/en/invoicing/verifactu).
  </Accordion>

  <Accordion title="SES Hospedajes">
    Spanish Ministry of the Interior platform for traveller registration (replaces the old "guest report" workflow). Mandatory in Spain. See [SES Hospedajes](/en/compliance/ses-hospedajes).
  </Accordion>

  <Accordion title="INE">
    Spanish National Statistics Institute. Tourist properties must submit monthly data on occupancy, ADR and guest origin. See [INE](/en/compliance/ine).
  </Accordion>

  <Accordion title="DNI / NIE / NIF / CIF">
    * **DNI**: Spanish ID card for nationals.
    * **NIE**: Equivalent for foreign residents.
    * **NIF**: Tax number — DNI (individuals) or CIF (companies) for invoicing.
    * **CIF**: Company tax identifier.
  </Accordion>
</AccordionGroup>

## Operational flows

<AccordionGroup>
  <Accordion title="Check-in / Check-out">
    Guest arrival and departure in the system. Check-in happens when the guest arrives (in person or via auto check-in link); check-out, when they leave. Changes the reservation state and the planning colour.
  </Accordion>

  <Accordion title="Pre check-in">
    The guest completes their data before arrival (via email link). Speeds up reception and improves SES data completeness.
  </Accordion>

  <Accordion title="No-show">
    Confirmed reservation whose guest doesn't show up. Usually triggers a penalty per the rate's policy. See [No-show](/en/reservations/no-show).
  </Accordion>

  <Accordion title="Proforma">
    Draft invoice: shows amounts and data but isn't fiscally valid until validated. Useful to send the customer before payment. See [Proforma](/en/invoicing/proforma).
  </Accordion>

  <Accordion title="Corrective invoice">
    Invoice that corrects (voids or adjusts) a validated invoice. When VeriFactu is active or more than 48 h have passed, it's the only way to change something. See [Correct an invoice](/en/invoicing/correct-invoice).
  </Accordion>
</AccordionGroup>

<Tip>
  Missing a term? Send the one that gave you doubts to [soporte@roomdoo.com](mailto:soporte@roomdoo.com) and we'll add it.
</Tip>