> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# XblAchievementRarityCategory

> XblAchievementRarityCategory

# XblAchievementRarityCategory

Enumeration values that indicate the rarity category for an achievement.

## Syntax

```cpp theme={null}
enum class XblAchievementRarityCategory  : uint32_t  
{  
    Unset = 0,  
    Rare = 1,  
    Common = 2  
}  
```

## Constants

| Constant | Description                                                                             |
| -------- | --------------------------------------------------------------------------------------- |
| Unset    | The rarity is incalculable (e.g. no one has played the title yet, demoninator is 0).    |
| Rare     | The number of global users that have unlocked this achievement is between 0 - 10.9.     |
| Common   | The number of global users that have unlocked this achievement is between 11.0 - 100.0. |

## Requirements

**Header:** achievements\_c.h

## See also

[achievements\_c](/reference/live/xsapi-c/achievements_c/achievements_c_members)


## Related topics

- [XblAchievementUnlockEvent](/reference/live/xsapi-c/achievements_c/structs/xblachievementunlockevent.md)
- [XblAchievement](/reference/live/xsapi-c/achievements_c/structs/xblachievement.md)
- [XblAchievementsResultGetAchievements](/reference/live/xsapi-c/achievements_c/functions/xblachievementsresultgetachievements.md)
- [XblAchievementsManagerGetAchievements](/reference/live/xsapi-c/achievements_manager_c/functions/xblachievementsmanagergetachievements.md)
- [XblAchievementsGetAchievementAsync](/reference/live/xsapi-c/achievements_c/functions/xblachievementsgetachievementasync.md)