---
title: "DF0016: Agent Resource Already Registered"
description: "Agent resource \"{id}\" is already registered."
canonical_url: "https://devfra.me/errors/df0016"
---
# DF0016: Agent Resource Already Registered

> Agent resource "\{id}" is already registered.

## Message

> Agent resource "`{id}`" is already registered.

## Cause

`ctx.agent.registerResource()` was called with an `id` that already exists on the host.

## Fix

Pick a distinct id or unregister the existing resource first via the handle returned from the previous call.

## Source

- [`packages/devframe/src/node/host-agent.ts`](https://github.com/devframes/devframe/blob/main/packages/devframe/src/node/host-agent.ts): `ctx.agent.registerResource()` throws `DF0016` when the resource id is already registered on the host.


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