I entered SS income wrong, amount more than 1099-R by 280.00. Should I amend?

Yes. This is not a small amount that can be ignored. Amendments should be available on March 25th.

Thank you for reply and understand; except for the march 25th date, that's the first date I can submit a form to amend? Thank you again ! Laurie

The amend return routine should be available in TurboTax on March 25. You should wait until your return is processed by the IRS before you amend your return. This is typically when you receive your refund or if you paid money with your return, when the payment is processed.