We are getting an error message when trying to efile a 2022 California individual amended. The error relates to "A binary attachment file". I called Proseries and they have not addressed this issue and recommended we file a paper copy with CA. It appears this error has been around since 2021 (based on my search in this Accountants Community). Does anyone have a work around to get a 2022 California individual amended return to efile and get accepted?
Original Fed and CA returns had pdf attachments. Federal amended was efiled and accepted with no problems. I have tried efiling CA amended with and without attachments and get the same "binary attachment" error.
