Lump Sum SS payment

My daughter used to receive SSI and as a result has never had to file taxes before. Last year, she was switched to SSDI on a child rider and received a 1099  which includes backpay for 2022 and 2021. While putting this information into Turbo Tax to determine if she owes any taxes on the backpay, it is asking for 1099 information for 2022 and 2021. She never received a 1099. How can I complete the tax forms if this information is not available?