---
title: invalidArgument
framework: system
role: symbol
role_heading: Type Property
path: system/errno/invalidargument
---

# invalidArgument

Invalid argument.

## Declaration

```swift
static var invalidArgument: Errno { get }
```

## Mentioned in

Adopting Swift Error Constants

## Discussion

Discussion One or more of the specified arguments wasn’t valid; for example, specifying an undefined signal to a signal or kill function. The corresponding C error is EINVAL.

## See Also

### System Call Errors

- [alreadyInProcess](system/errno/alreadyinprocess.md)
- [badAddress](system/errno/badaddress.md)
- [interrupted](system/errno/interrupted.md)
- [noFunction](system/errno/nofunction.md)
- [nowInProgress](system/errno/nowinprogress.md)
- [resourceBusy](system/errno/resourcebusy.md)
- [resourceTemporarilyUnavailable](system/errno/resourcetemporarilyunavailable.md)