> ## 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 ```typescript theme={null} import { ObservabilityDataRegionInput } from "@openrouter/sdk/models"; let value: ObservabilityDataRegionInput = "global"; // Open enum: unrecognized values are captured as Unrecognized ``` ## Values ```typescript theme={null} "global" | "europe" | "us" | "eu" | Unrecognized ```