> For the complete documentation index, see [llms.txt](https://docs.twoowls.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.twoowls.io/hot-topics/pixel-errors.md).

# Pixel Errors

<details>

<summary>Pixel not paired with a Catalog</summary>

Don’t worry if you don’t want to run Dynamic Product Ads (DPA). If you do, what’s needed is to create a catalog & upload products to it through a data feed. Then, connect a pixel to that Catalog as a data source.\
\
Check out how to set up your catalog and start retargeting [here](/getting-started/start-retargeting.md).

</details>

<details>

<summary>Pixel firing 2 times on the page</summary>

Chances are you have accidentally set the pixel to fire via another tool, such as Facebook Sales Channel (the Shopify app), Google Tag Manager, your theme, etc.\
\
:point\_right:Check [this](/getting-started/important-checklists/app-checklist/choose-the-right-pixel.md) out to solve this.

</details>

{% content-ref url="/pages/clQHbFtcKvLML67Ar62F" %}
[Level up your data with CAPI](/getting-started/level-up-your-data-with-capi.md)
{% endcontent-ref %}

{% hint style="info" %}
📝**Good to know:** There are even more common errors if you are using Conversion API events (which I am sure you would like to). But most of them are **solvable or false-positive** warnings. That means you don't need to worry too much.
{% endhint %}

{% content-ref url="/pages/uwK4uaQyIxexQCfbN05v" %}
[Conversion API events](/hot-topics/conversion-api-events.md)
{% endcontent-ref %}


---

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