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# PFEntityUnregisterTokenExpiredEventHandler

> Unregisters a previously registered callback.

Unregisters a previously registered callback.

## Syntax

```cpp theme={null}
void PFEntityUnregisterTokenExpiredEventHandler(  
    PFRegistrationToken token  
)  
```

### Parameters

**`token`**   PFRegistrationToken

The token returned from PFEntityRegisterTokenExpiredEventHandler.

### Return value

Type: void

## Requirements

**Header:** PFEntity.h

## See also

[PFEntity members](/services/playfab/api-references/c/pfentity/pfentity_members)


## Related topics

- [Entity Handles](/services/playfab/sdks/c/entity-handles.md)
- [Services C API overview - PFEntity.h](/services/playfab/api-references/c/pfentity/pfentity_members.md)
- [PFEntityTokenExpiredEventHandler](/services/playfab/api-references/c/pfentity/functions/pfentitytokenexpiredeventhandler.md)
- [PFEntityRegisterTokenExpiredEventHandler](/services/playfab/api-references/c/pfentity/functions/pfentityregistertokenexpiredeventhandler.md)
- [PFEntityUnregisterTokenRefreshedEventHandler](/services/playfab/api-references/c/pfentity/functions/pfentityunregistertokenrefreshedeventhandler.md)