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

# Item IDs

> Every item in UMI is identified by a unique Item ID ().

### **What Are Item IDs?**

Every item in UMI is identified by a unique **Item ID** (`FName`). This is the primary key used throughout the system to reference item types.

```
FName ItemID = "HealthPotion";
FName ItemID = "IronSword";
FName ItemID = "WoodLog";
```

### **Best Practices**

* **Use descriptive names**: `IronSword` not `Sword1`
* **Be consistent with naming**: Use PascalCase or snake\_case consistently
* **Avoid spaces**: Use `HealthPotion` not `Health Potion`
* **Keep them unique**: No two items should share the same ID
* **Plan for localization**: Item IDs are not shown to players (use DisplayName for that)

### **Where Item IDs Are Used**

* **ItemDataAsset**: Defines the item type
* **FItemInstance**: References which item type this instance is
* **Crafting recipes**: Specifies ingredients and outputs
* **Loot tables**: Defines what can drop
* **Container restrictions**: Whitelist/blacklist specific items
* **Save system**: Persists item references