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

# Booking

> The Booking dimension in FRTBCombinedCube, covering hierarchies for books, desks, categories, FRTB model treatment, IRT desk groups, netting sets, PLA zones, and trade inclusion flags

The **Booking** dimension contains the following hierarchies:

<CardGroup cols={2}>
  <Card title="Books" href="../../books">Unique book identifiers.</Card>
  <Card title="Categories" href="../../categories">Desk categories.</Card>
  <Card title="Desks" href="../../desks">Unique desk identifiers.</Card>
  <Card title="EBA Instrument Type (optional)" href="../../eba-instrument-type-optional">This hierarchy is used to indicate the type of EBA instrument. See [EBA Reporting Templates](../../../dev/dev-getting-started/optional/eba-reporting-templates) for more information.</Card>
  <Card title="FRTB Model" href="../../frtb-model">Shows the capital treatment of a position: IMA or SA</Card>
  <Card title="Inclusion" href="../../inclusion">Flag to determine if a trade should be included in the capital calculations.</Card>
  <Card title="IRT Desk" href="../../irt-desk">Is Internal Risk Transfer (IRT) Desk (Y/N).</Card>
  <Card title="IRT Group" href="../../irt-group">Membership group for IRT Desk. Provided you set `irt-desk-groups.enabled=true`, this hierarchy can be used to select which group of books are used in the IRT desk.</Card>
  <Card title="Netting Set" href="../../netting-set">This hierarchy is used to group trades that can offset each other before calculating the capital requirement.</Card>
  <Card title="PLA Zone" href="../../pla-zone">Shows PLA Zone for desks (input data): - A: 'Amber' - G:'Green' - R:'Red'</Card>
  <Card title="Regulatory Book (optional)" href="../../regulatory-book-optional">This hierarchy is used to indicate which regulatory book the book belongs to. See [Regulatory Books](../../../dev/dev-getting-started/optional/regulatory-book) for more information.</Card>
  <Card title="Trades" href="../../trades">Unique trade identifiers. This is a virtual hierarchy.</Card>
</CardGroup>