---
title: configurationSpecifications
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/entity/configurationcatalog/configurationcombination/configurationspecifications
---

# configurationSpecifications

A dictionary that associates IDs of configuration sets to IDs of configurations.

## Declaration

```swift
let configurationSpecifications: [String : String]
```

## Discussion

Discussion Use this property to represent a configuration choice from each configuration set.

## See Also

### Accessing values

- [entity](realitykit/entity/configurationcatalog/configurationcombination/entity.md)