All SwyxIt! users, who want to use a DATEV pro integration, need a SwyxPLUS for DATEV pro license. SwyxIt! retrieves this license during logon to the SwyxServer, if SwyxPLUS for DATEV pro is installed. Users with a SwyxPLUS for DATEV pro license do not need an additional SwyxPLUS VisualContacts license.