Retirement tax questions

I tried this in turbotax for $1250.  Now turbotax instructs me to file my tax return along with the 1098 form.  However, I don't have such form. All I have is a letter from the car charity stating the value of the auction and requesting us to send it my social security for this form.  I don't want to give away my SS# and so I don't have such form.  

 

Is there anyway in turbotax to state that I don't have 1098 but I have evident of the new donation value.