---
title: HMError.Code.nilParameter
framework: homekit
role: symbol
role_heading: Case
path: homekit/hmerror/code/nilparameter
---

# HMError.Code.nilParameter

An error indicating that nil was passed for an operation that does not accept nil.

## Declaration

```swift
case nilParameter
```

## See Also

### Parameter errors

- [HMError.Code.invalidParameter](homekit/hmerror/code/invalidparameter.md)
- [HMError.Code.missingParameter](homekit/hmerror/code/missingparameter.md)
- [HMError.Code.unconfiguredParameter](homekit/hmerror/code/unconfiguredparameter.md)