Is the lt03wifiue build the same as n1awifi? 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).

Sometime during development, some Samsung devices were reassigned codenames, and lt03wifi was renamed to n1awifi (see commit here and developer note here).

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).