Digidentity requires a sufficient amount of name history as part of the verification process. If you have recently become married for example, you may still have personal credit history attached to your maiden name.
If you state that you have changed names within the past year, you will be asked to provide your previous name. Having said that, if you changed name more than a year ago and you still have financial details attached to another name, we strongly advise you to add this as extra. Otherwise you can select the date your name changed in your profile.