delete
https://{region}-api.dotdigital.com/v2/data-fields/
Deletes a contact data field within the account
Use this operation to delete a contact data field within your account.
You can't delete any reserved contact data fields, such as (FIRSTNAME, LASTNAME, ADDRESS, POSTCODE, GENDER) or any currently used elsewhere in the system.
This operation returns an API dependencies object that specifies the type of dependency and the dependency ID.