This is good to know. Thanks for the information.  Still doesn't change the fact that on the W-2 the program is not doing the error checking on a missing EIN. Even if it doesn't have to do it on the 1099-NEC.  I had those two incidents happen with clients. I just assume it was a forgotten 1099-NEC or typo on a 1095-A  but I guess it something else wrong.  PS provides entry for 1099-NEC, 1099-K, etc.  I just assume it was an IRS requirement for software companies to start doing so over the years.