As a Pendo Resellers Partner, your organization has chosen to enable certain metadata fields for customers who are using Pendo Resellers on your application. Therefore, they cannot be removed.
By enabling these metadata fields, your customers can build segments, target guides, and filter analytics. Removing this field breaks any segments your customers are using with this data. If the “Remove” button is not disabled, your organization is not passing it down to Resellers customers, and you can remove the metadata field.
For more information on metadata, see Metadata (for Partners).