---
url: /errors/pinia_colada_r0007.md
---
# PINIA\_COLADA\_R0007: defineMutation() called outside of a component or effect scope

* Level: warning (dev only)

## What happened

A composable returned by `defineMutation()` was called outside of a component and outside of an effect scope. The mutation's reactive effects are attached to the current scope so they can be paused when no consumer is left; without a scope, they will never be cleaned up, which may cause memory leaks.

## How to fix it

Call the composable inside a component `setup()`, an effect scope, or a store:

```ts
const useCreateTodo = defineMutation({
  key: ['todos', 'create'],
  mutation: (text: string) => createTodo(text),
})

// ✅ inside a component setup
const { mutate } = useCreateTodo()

// ✅ inside an effect scope
const scope = effectScope()
scope.run(() => useCreateTodo())

// ❌ at the top level of a module or inside an event handler
```

## Common causes

* Calling the defined mutation at the top level of a module
* Calling it inside a plain event handler or async callback that runs after `setup()` finished