data _null_;
    length activation_code $ 9;
    array buchstabensalat {7} $1 _temporary_ ("1","A","F","G","L","P","S");
    array richtiger_buchstabe {9} (3,2,3,7,6,5,6,4,1);
    do stelle=1 to 9;
    activation_code=cats(activation_code,buchstabensalat(richtiger_buchstabe(??????)));
    end;
link=catt("https://support.sas.com/edu/viewmyelearn.html?activationCode=", activation_code);
    put link;
run;