CSAMENDUS01 e-file error
Use the Amended return statement dialog in the 1065 Screen to enter the reason the return is amended (in lieu of completing Form 1065X) when electronically filing an amended return.
The return is missing the reason it's being amended.
Solution
Enter a Reason for Amended Return in the
Amended return (Also marks all K-1's as amended)
statement dialog in the 1065 Screen in the General folder. The IRS does not accept Form 1065X electronically.
