I have an SM-P600, when I download TWRP it shows
lt03wifiue for the build name. When I download LineageOS it shows n1awifi for the build name. Are these two the same builds?
n2awifi is the TabPRO 10.1. You might be referring to
n1awifi (which you correctly mentioned in your other question).
No need to worry as these are still the same device, and the ROM itself has provision for the name change (it checks match for either codenames when installing).