@Jacksonbarnhisel
So, reading all of the above didn't help?
It's really easy to go back to the actual forms and edit the final letters to make them lower case. i.e., don't try to change them in the error check screen.
When editing them in the state section of each form (where withholding was done), I usually suggest blanking out the entire number....clicking in another box, then coming/clicking back into the proper box and retyping the number and final three letters.
Yeah, would be nice if the programmers would get the software to accept either, or auto-change to lower case where needed.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
