Retirement tax questions

1040SR "Deferral for Certain Schedule H or SE Filers Smart worksheet" calculates the amount of self employment (SE) taxes you might want to defer.  If you don't want to defer taxes and enter 0 on line 11 you will get an error message from TurboTax say the number must be greater than 0.  The answer is to leave the cell blank and TurboTax will no longer generate an error code.