# SIM_STAT_UNACKED_BYTES

*LSL constant*

```lsl
integer SIM_STAT_UNACKED_BYTES = 17;
```

Returns the total number of unacknowledged bytes.

Constant groups: [SimulatorStat](/constants/groups/SimulatorStat/)

## See also

### Functions

- [llGetSimStats](/functions/llGetSimStats/)

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*Source: [SIM STAT UNACKED BYTES](https://wiki.secondlife.com/wiki/SIM_STAT_UNACKED_BYTES) on the Second Life Wiki. Content from the Second Life Wiki article SIM STAT UNACKED BYTES (revision 1213072, 2023-01-30), CC BY-SA 3.0.*

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From lsl.dev: https://lsl.dev/constants/SIM_STAT_UNACKED_BYTES/