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# PFEventsWriteTelemetryEventsGetResultSize

> Get the size in bytes needed to store the result of a WriteTelemetryEvents call.

Get the size in bytes needed to store the result of a WriteTelemetryEvents call.

## Syntax

```cpp theme={null}
HRESULT PFEventsWriteTelemetryEventsGetResultSize(  
    XAsyncBlock* async,  
    size_t* bufferSize  
)  
```

### Parameters

**`async`**   XAsyncBlock\*<br />*Inout*

XAsyncBlock for the async operation.

**`bufferSize`**   size\_t\*<br />*output*

The buffer size in bytes required for the result.

### Return value

Type: HRESULT

Result code for this API operation. If the service call is unsuccessful, the result will be E\_PF\_ENCRYPTION\_KEY\_BROKEN, E\_PF\_EVENT\_ENTITY\_NOT\_ALLOWED, E\_PF\_EVENT\_NAMESPACE\_NOT\_ALLOWED, E\_PF\_INVALID\_JSON\_CONTENT, E\_PF\_PER\_ENTITY\_EVENT\_RATE\_LIMIT\_EXCEEDED, E\_PF\_TELEMETRY\_KEY\_DEACTIVATED, E\_PF\_TELEMETRY\_KEY\_INVALID or any of the global PlayFab Service errors. See doc page "Handling PlayFab Errors" for more details on error handling.

## Requirements

**Header:** PFEvents.h

## See also

[PFEvents members](/services/playfab/api-references/c/pfevents/pfevents_members)


## Related topics

- [PFEventsWriteTelemetryEventsAsync](/services/playfab/api-references/c/pfevents/functions/pfeventswritetelemetryeventsasync.md)
- [Services C API overview - PFEvents.h](/services/playfab/api-references/c/pfevents/pfevents_members.md)
- [PFEventsWriteTelemetryEventsGetResult](/services/playfab/api-references/c/pfevents/functions/pfeventswritetelemetryeventsgetresult.md)
- [PFEventsWriteEventsGetResultSize](/services/playfab/api-references/c/pfevents/functions/pfeventswriteeventsgetresultsize.md)
- [PFEventsWriteEventsGetResult](/services/playfab/api-references/c/pfevents/functions/pfeventswriteeventsgetresult.md)