If you have used the TurboTax desktop version, Open TurboTax 2023, go to 'Changed the Filed Return," select the file, and continue.

For step-by-step instructions, please follow this TurboTax article:  I've filed my tax return. Can I still make changes?

Thank you for choosing TurboTax.

I can only access PDFs of my older returns, which means I can't use ReFile. How do I get access to my 2023 return that allows me to use ReFile?

Did you use an online version or a desktop version of TurboTax to file your 2023 tax return? 

You can also file T1 adjustment with CRA T1-ADJ T1 Adjustment Request