> For the complete documentation index, see [llms.txt](https://docs.adaptiva.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adaptiva.com/patch/advanced-settings/customer-extension-data.md).

# Customer Extension Data

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Customer Extension Data is an advanced feature of Adaptiva. Please reach out to our [Support Team](https://adaptiva.com/support) for additional assistance.
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![](/files/fWwhq0MVnyuU5gXnRL7G)

**Customer Extension Data** fields relate directly to fields in a customized template. If you do not have customized templates with key/value pairs you can modify, you do not need to configure or use this feature.

If you want to create customized templates that use key/value pairs for some settings, contact [Adaptiva Customer Support](https://www.adaptiva.com/support).