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> For a complete documentation index, see https://docs.nvidia.com/nemo/relay/llms.txt.
> For full documentation content, see https://docs.nvidia.com/nemo/relay/llms-full.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.nvidia.com/nemo/relay/_mcp/server.

# Module error

> Error types for the NeMo Relay runtime.

Generated from `cargo doc --no-deps -p nemo-relay -p nemo-relay-adaptive -p nemo-relay-ffi`.

Error types for the NeMo Relay runtime.

All fallible operations in the runtime return [`Result<T>`](/reference/api/rust-library-reference/nemo-relay/error/type-result), which uses [`FlowError`](/reference/api/rust-library-reference/nemo-relay/error/enum-flowerror) as the error type. Errors are categorized by cause (duplicate registration, missing entity, guardrail rejection, etc.).

## Enums

* [FlowError](/reference/api/rust-library-reference/nemo-relay/error/enum-flowerror): The error type for all NeMo Relay runtime operations.

## Type Aliases

* [Result](/reference/api/rust-library-reference/nemo-relay/error/type-result): A specialized [`Result`](https://doc.rust-lang.org/1.93.0/core/result/enum.Result.html) type for NeMo Relay operations.