I am sure they both work?

Noin 50 miljoonan euron urakkaa toteuttaa Puutalo Oy.

vs

Noin 50 miljoonan euron urakaN toteuttaa Puutalo Oy.

#object

thanks in advance!

(in fact, I think it should be "urakan" because toteuttaa means something will be completed. it's opposite of "suunnitella"?)