How do i log into last years return i used line 150 as the amount for 101 in the cra set up for my account and it was not accepted

If you used the TurboTax Online software for your 2015 tax return,

Go to "www.turbotax.ca"

Move the mouse to "Sign in"

Click on "Start or Continue my 2015 Tax Return"

You will be able to see the return(s) you completed for 2015, and access them.