This API is subject to change. Bug fixes and new features will be released based on developer feedback throughout the preview period.
Deletes an extended field.
The deleteExtendedField() function returns a Promise that resolves when the specified extended field is deleted.
When an extended field is deleted, any contact data stored in the field is permanently deleted as well.
You can only call this method when authenticated as a Wix app or Wix user identity.
Extended field key.