Amended tax e-filing for year 2023

[KrishnaKSsingh]

Question1.
I did 2 amendments for my current year - 2023 tax, why turbo tax is not allowing to file the second amended tax return electronically?

Question2.

If I have to file 2nd Amended tax return by mail, then what forms and documents I need to enclose along with 1040-V and checks to IRS and FTB- CA, ?