> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # ObservabilityDataRegionInput `eu` is accepted as an alias for `europe` and normalizes to `europe`. ## Example Usage ```go theme={null} import ( "github.com/OpenRouterTeam/go-sdk/models/components" ) value := components.ObservabilityDataRegionInputGlobal // Open enum: custom values can be created with a direct type cast custom := components.ObservabilityDataRegionInput("custom_value") ``` ## Values | Name | Value | | ------------------------------------ | ------ | | `ObservabilityDataRegionInputGlobal` | global | | `ObservabilityDataRegionInputEurope` | europe | | `ObservabilityDataRegionInputUs` | us | | `ObservabilityDataRegionInputEu` | eu |