That depends on different factors:
If you already have an account at Upvest, you don't need to identify yourself again.
If your account is at DAB BNP Paribas and your identification was done in the last 2 years, you also don't need to identify yourself again.
If you don't have an Upvest account yet or your last identification was more than 2 years ago, you'll need to identify yourself again.