(85)It is important that the decisions of contracting authorities should be based on recent information, in particular as regards exclusion grounds, given that important changes can intervene quite rapidly, for instance in the event of financial difficulties which would render the economic operator unsuitable or, conversely, because an outstanding debt on social contributions would meanwhile have been paid. It is therefore preferable that, whenever possible, contracting authorities should verify such information by accessing relevant databases, which should be national in the sense of being administered by public authorities. At the current stage of development, there might still be cases where doing so is not yet possible because of technical reasons. The Commission should therefore envisage promoting measures that could facilitate easy recourse to up-to-date information electronically, such as strengthening tools offering access to virtual company dossiers, or means of facilitating interoperability between databases or other such flanking measures. It should also be provided that contracting authorities should not ask for still up-to-date documents, which they already possess from earlier procurement procedures. However, it should also be ensured that contracting authorities will not be faced with disproportionate archiving and filing burdens in this context. Consequently, implementation of this duty should only be applicable once the use of electronic means of communication is obligatory, as electronic document management will render the task much easier for contracting authorities.