# Customer Extension Data

Customer Extension Data is an advanced feature of Adaptiva. The Customer Extension Data fields allow advanced users to specify different key/value pairs for use in customized Patching Strategies, Deployment Chains, or Business Units when necessary to achieve different results.

![](https://2503798551-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7VJNM00p5XQ4pMWqCu8y%2Fuploads%2Fgit-blob-22c1d8958b774355efbe8f8a75501fa6dddac61a%2Fimage1.png?alt=media)

**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).