The recipe is for crockpot turkey, with turkey breast, merlot, onions, cranberry sauce and 1 oz knorr peppercorn sauce mix. I used 1oz peppercorn marinade mix. Will it ruin it?
It won't be the exact same thing as the original recipe; you've essentially seasoned it differently. So I'd expect it won't be better or worse just different, but depending on your tastes it might well be better or worse. I can imagine it ending up under-salted since the marinade mix might be less salty than the sauce mix.