Thank you for answering, though that was not quite the roadblock I was hitting. I finally found the solution and it was super simple once I realized it. Below the 20c items printed on the form, such as B1 and B2, there are several blank lines that can be filled in by selecting a code from a small box with a drop down arrow. The system had chosen to populate the first such blank line with code N which displays "Business Interest Expense" on the blank line. However, it won't let you enter a value there because you are supposed to enter that on B1 or B2 above! I couldn't get around that until I discovered that if I hit the drop down arrow to display all of the options, and scrolled up to the top of the list, there was an option for an empty line, with no code selected and nothing written on the line. Once I selected that, the error disappeared. I do wish Intuit would give more helpful error information.
