New Katso IDs cannot be created December 1 2020 onwards. Customs’ customers who still use Katso IDs, will be given time until 31 March 2021 to switch to the Suomi.fi service maintained by the Digital and Population Service. The extended time limit is intended for customers who cannot begin using Suomi.fi identification and authorisations independently. Of Customs’ customers, these are mainly foreign companies and individuals.
So for now an Intrastat declaration be submitted using a sub-ID (PWD=Password) or strong authentication (OTP=One Time Password). Re-open locked IDs and Passwords or get a new Password yritys.tunnistus.fi.