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# DF0006: RPC Function Not Registered

## Message

> RPC function "`{name}`" is not registered

## Cause

`RpcFunctionsHost.invokeLocal()` was called with a method name that has not been registered on this host.

## Fix

Register the function with `ctx.rpc.register(defineRpcFunction({ name }))` before invoking it.

## Source

- [`packages/devframe/src/node/host-functions.ts`](https://github.com/devframes/devframe/blob/main/packages/devframe/src/node/host-functions.ts) — `RpcFunctionsHost.invokeLocal()` throws `DF0006` when the requested method has not been registered on this host.
