Either click on the piglet deaths icon on your main PigVision screen or go into the Sows/boars menu, piglet deaths option. Enter the animal, the date, number of piglets and code. You can also enter them on a sow card via the piglet deaths icon at the top.
To check codes within the data entry window, tap into the code column and then tap F5 on your keyboard or tap the binoculars icon at the top of the screen.
If you need to check the codes you have set up for piglet deaths, go to the Codes option under the General menu.