decis execut committe decemb financi regul cost instal oper schengen inform system si sch execut committe regard articl convent implement schengen agreement regard articl abovement convent decid financi regul instal cost technic support function cost schengen inform system si attach hereto adopt decis enter forc contract state implement convent notifi procedur requir legal system decis bind territori complet pari decemb chairman lamassour updat version sch