@itonewbie Thanks a lot.
You are right I should unchecked federal e-file box. But would PTO attach f1040X and the amended f1040 to the amended 2018 CA540 (including f X) by unchecking federal e-file box at Profile?
I also have other 2 attachments only to be attached to the amended CA540. It seems that by having these attachments PTO does not allow e-file by issuing these diagnostics: PDF Attachment #1: The pdf attachment is marked to be sent with the federal return, but the federal return is not selected for e-file in screen 1. CA - Ref #35156.
Please let me know how to solve the only 2 attachments to the amended 2018 CA540. Thanks.