In order to perform error checking on your forms, you must click on the "???" underneath the "STATUS" column in the "PBGC - Year" box.
Once you have clicked on "???" you will be directed to a new window displaying the edit checks that your form did not pass.
You will now notice that you no longer have "???" under the status column, but instead a "NOT-OK" status indicating that you have some errors in your form.
In order to get an "OK" status, you must correct all of the errors in your form and repeat the edit checking process. Eventually you will have an "OK" status for all of your forms. It is important to make sure that you pass the editing checking because you will not get the XML file you need for the "My PAA" section of the instructions.