Error check flags country code for Schedule K-2 Part II section 1 sales. There are no sales

Doing the error check on TurboTax business flags a problem in the country code on Schedule K-2 Part II section 1 Gross Income on line 1 Sales.

Unfortunately, as this is from dividend distributions from mutual funds, there are no sales.
No matter what value I select from the drop down for the country code and regardless of the value I put in 1(a) US source, I still get an error for the country code.
We have put the 1099 information in line 8 Qualified Dividends and there is no error generated.

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