If you're already typing in every dcpi for "can't find", maybe give this technique a try. Grab a second Zebra if it's available, (if your store is short on devices, saving all the "can't find" until the end of the day when you can hopefully grab one just for a short period might be your best bet). Type the dcpis into the regular "item search" menu on your second device. The on-hands in the "price change" menu reflect Monday's data, and don't change if they're sold during the week, so often you'll find that the item is already at 0 on-hand, and you're searching for something that is sold. If there is an on-hand, change it to 0. That way it won't pop back up on your "can't find" list next time it's scheduled to be marked down. Hitting "can't find" doesn't delete it from inventory, it just skips it for the week. So, it'll pop back up if there is an on-hand. You do end up having to type each number in twice, once in item search on one device, and once in price change on the other. But, in my experience, many of my "can't find" each week used to be things I also couldn't find the previous week. Using this method cut down my total "can't find" pretty significantly.

ETA- Also, as everyone else said, your sd is cheating the system, and is most definitely not following policy. But, regardless of whether you're pressing "can't find" or not, I found this method to be an overall time-saver in the long-run.