@Trishbk take a look at the form "1040/1040SR Wks." At line 12b there is a place for you to manually enter the maximum "non-itemized charitable deduction" that applies, i.e., either $600 for married filing jointly, or $300 for everything else. The field just to the left and slightly above should reflect your total amount of charitable contributions. The purpose of line 12b is to enter the smaller of the two amounts. I don't know why this is not automated within TurboTax, but I will guess that it is still early in the tax year and they haven't gotten around to it yet.
