---
title: MARKLESS_SHARED_SCOPE_INVALID
description: "shared() scope must be valid: a Markless compiler error."
sidebar: { hidden: true }
search: { keywords: ["SHARED_SCOPE_INVALID","shared scope invalid","markless error"] }
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---

**Error** from the compiler, while it builds your `.tsrx` files.

## What happened

Markless prints the message, the reason, and a suggestion:

```text
MARKLESS_SHARED_SCOPE_INVALID: Unknown shared() scope <valueText>. Valid scopes are <valid>.
shared() scope controls graph lifetime. Silently dropping an unknown scope changes whether data is request, container, page, or widget owned.
Use `shared(factory, { scope: "request" })`, `shared(factory, { scope: "container" })`, `shared(factory, { scope: "page" })`, or `shared(factory, { scope: "widget" })`.
https://markless.dev/errors/MARKLESS_SHARED_SCOPE_INVALID
```

Words in angle brackets change from case to case.

## How to fix it

Start with the suggestion in the message above.

This page has no guide yet. [Help write it](/contributing/improve-these-docs).

## Where it comes from

`@markless/compiler` raises this code. Source:

- [packages/compiler/src/passes/semantic-graph/diagnostics.ts](https://github.com/compiled-run/markless/blob/main/packages/compiler/src/passes/semantic-graph/diagnostics.ts)

Read [how to read a Markless error](/tooling/diagnostics), or go back to [all error codes](/errors).