Can I efile an amended 1065 partnership return for 2023 that was originally efiled?

[tagteam]

If you used TurboTax Business to e-file the original return, you will have to print and mail the amended return.

[LenaH]

E-filing Form 1065X is unsupported and must be printed and mailed, as stated by tagteam above. The federal form availability table for partnerships can be found here.