---
title: Error constants
framework: pushtotalk
role: collectionGroup
role_heading: API Collection
path: pushtotalk/ptinstantiation-error-constants
---

# Error constants

Error codes for instantiation operations.

## Topics

### Constants

- [unknown](pushtotalk/ptinstantiationerror-swift.struct/unknown.md)
- [invalidPlatform](pushtotalk/ptinstantiationerror-swift.struct/invalidplatform.md)
- [missingBackgroundMode](pushtotalk/ptinstantiationerror-swift.struct/missingbackgroundmode.md)
- [missingPushServerEnvironment](pushtotalk/ptinstantiationerror-swift.struct/missingpushserverenvironment.md)
- [missingEntitlement](pushtotalk/ptinstantiationerror-swift.struct/missingentitlement.md)
- [instantiationAlreadyInProgress](pushtotalk/ptinstantiationerror-swift.struct/instantiationalreadyinprogress.md)

## See Also

### Inspecting an instantiation error

- [PTInstantiationError.Code](pushtotalk/ptinstantiationerror-swift.struct/code.md)