---
title: reservationId
framework: sirieventsuggestionsmarkup
role: symbol
role_heading: Type
path: sirieventsuggestionsmarkup/reservationid
---

# reservationId

A stable, unique identifier for the reservation.

## Declaration

```data
string reservationId
```

## Mentioned in

Checking Your Reservation Markup

## Discussion

Discussion Use a consistent, unique identifier for each reservation. If you also provide reservation information with Siri Event Suggestions in your app, use a single, consistent value for that reservationNumber and this reservationId.

## See Also

### Basic Data Types

- [@context](sirieventsuggestionsmarkup/@context.md)
- [dateTimeISO8601](sirieventsuggestionsmarkup/datetimeiso8601.md)
- [reservationStatus](sirieventsuggestionsmarkup/reservationstatus.md)
- [URL](sirieventsuggestionsmarkup/url.md)
- [telephone](sirieventsuggestionsmarkup/telephone.md)