Thank you for your comment! I was encouraged by finding another person receiving the identical error messages for NY state return. When I deleted the old and tried to transmit my newly created NY return, I did not get the "Duplicate filing found in the same transmission" message, but when I tried to transmit again soon after, the same message returned. I still received the other message, "Tax Year 2023 transmissions are not available. Turbo Tax is not ready to process Tax Year 2023 for this return." This tells me that turbotax kept transmitting, but NY is just not ready to process the return yet. I hope that's all there is to it. I am also going to wait a few days before I try to resubmit...
