you are correct, the form I'm filing is CA form 540 along with CA schedule X. My question is, above the bold print (2020 California Resident Income Tax Return 540) in fine print, it reads, "AMENDED DO NOT PROCESS--ATTACH TO SCHEDULE X) This varies from the version available from CA FTB website, where there is an actual box to check to indicate amended return. But my question is not how to file or fill out the return. I am asking specifically why, after indicating it's an amended return, does it say "DO NOT PROCESS" and what that means?
