# Ensure data accuracy

After scanning your codebase, you might be informed about possible data issues through the Web app.

<figure><img src="/files/BopxTufC9YUARxrn6X39" alt=""><figcaption></figcaption></figure>

These issues can cause the following symptoms:

* Duplicate components
* Some of the components are tagged as **`external`** but they shouldn't be
* The usage counts of some components are inconsistent

They can happen when:

* Omlet is unable to resolve imports from external packages. For example, if your design system library is used in your application repositories as an external dependency, the CLI will need to map imports from the build to their sources correctly.
* Omlet is unable to resolve your import paths properly if you have aliases in a TSConfig file or bundlers like Webpack, Babel, or Vite.

Omlet tries to detect these automatically, but it might not work for your specific setup.

To resolve imports from external packages or map aliases, you can create **`.omletrc`** file in the root directory of your repository and define **`exports`** or **`aliases`** properties. Follow the below instructions depending on your use case:

* [Exports configuration](/cli-and-dashboard/learn-omlet-cli/config-file/resolve-imports-from-external-dependencies.md)
* [Mapping aliases](/cli-and-dashboard/learn-omlet-cli/config-file/map-aliases.md)

If you have components scanned unnecessarily, such as Storybook stories and test files or duplicate components coming from the `dist` folders, you can prevent the CLI from scanning those components by defining their glob patterns. You can learn more here:

* [Excluding certain components & files](/cli-and-dashboard/learn-omlet-cli/config-file/excluding-certain-components-and-files.md)

You can also follow the Config file tutorial with a sample codebase:

* [Tutorial: Config file](/cli-and-dashboard/learn-omlet-cli/config-file/tutorial-config-file.md)

{% hint style="info" %}
**Need help?**

If you need more help or have questions, feel free to contact us at <support@omlet.dev>.
{% endhint %}


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