How many W-2s do you have?
On each W-2 that you got from an employer, what are the exact amounts in boxes 3, 4, and 7? Look at the W-2 forms from the employers, not in TurboTax.
Do you have more than one W-2 from the same employer?
Does any W-2 have an entry in box 12 with code A or M? If so, what is the amount, and which W-2 is it on?
Are you filing a joint return with your spouse? If so, please answer the preceding questions separately for you and your spouse.
Now look in TurboTax and carefully double check that you entered the amounts from each W-2 accurately. Look for missing, extra, or incorrect digits, misplaced decimal point, etc. If you are filing a joint return, look at the list of W-2s in the W-2 summary and make sure that each one was entered for the correct person - either you or your spouse.
What is the exact error message that you get from TurboTax - the complete message, word for word? At what point do you get the message? Is the message referring to one particular W-2?
Are you using TurboTax Online, or the CD/Download TurboTax software?
