"Check This Entry" message, but there's no place to enter any information in the forms screen.

The error message is saying that you have foreign taxes entered on the K-1, but no indication of the amount or type of income they were paid on.

Go back to the K-1 entry part of the interview and enter the information requested.  

1. Click on Federal Taxes > Wages & Income [In TT Self-Employed:  Personal > Personal Income > I'll choose what I work on].
2. Under S-corps, Partnerships, and Trusts [in desktop:  Business Investment and Trust Income], click on the Update box next to Schedule K-1. 
3. On the Tell Us About Your Schedules K-1 screen, click on the Start/Update box next to S corporations (Form 1120S).  
4. If you have already entered K-1 SCorp information, you will see the SCorp. K-1 Summary screen.  Click Edit to continue with the existing form entry.  
5. Continue to the screen Enter Box 14 Info.  You probably already have entered P-Total Foreign Taxes Paid.  On the next line enter the code and amount for the type of foreign gross income that generated the taxes: F--Passive; G--General; or H--Other.
6. Note that if you have more than one type of foreign gross income, you must enter separate K-1 worksheets for each type.

Thank you, Irene2805, most sincerely.  Your guidance was excellent and the problem is solved.  I appreciate your having considered by question very much.  Thanks!