general lack of centralised IT supporting systems in the
EU;
• decentralisation of the IT transaction systems in the 27
MS;
• lack of harmonisation (e.g. in the area of relevant
legislation and data requirements);
• the high number of national authorities involved;
• number of languages used;
• difficulties linked to the lodgement of any type of
declarations or request for other documents with a
single point for the EU (e.g. lack of EU-wide solution for
the electronic signature, lack of data harmonisation in
some areas, etc.).