Check to see if your subdomain is currently connected to another application by viewing the Destination
section of the Domain Overview
page. If there is an abbreviation of an app next to the subdomain in question, then this verifies that it is unable to be linked to any programme. Below is a listing of potential app abbreviations to recognise when you are checking:
/app: Indicates a Click & Build Safe Mode Application.
/clickandbuilds: Indicates a Click & Build Free Mode Application.
/shop: Represents the 1&1 eShop package.
/wsb: Represents the 1&1 WebsiteBuilder programme.
/dsc: Represents the 1&1 DynamicSiteCreator.
Domain overview page