# Reservations

Reservations temporarily reserve available quantity for customers when they add a Line Item to a Cart.

For a comprehensive overview of reservations, including how to configure and use them, see the [Reservations section in the Inventory overview](/api/inventory-overview.md#reservations).

## Representations

### Reservation

[type definition](/api/projects/reservations.md?urn=ctp:api:type:Reservation).

#### Reservation State

[type definition](/api/projects/reservations.md?urn=ctp:api:type:ReservationState).

#### ReservationReference

[type definition](/api/projects/reservations.md?urn=ctp:api:type:ReservationReference).

## Related pages

- [Area overview page with navigation](/api.md)
- [Previous page: Inventory](/api/projects/inventory.md)