The way I interpret the information on the page you attached is the following. You were able to tell TurboTax that $20K had already been contributed. However, based only on the screenshot, there was not an entry made to indicate that the employer match amount has already been contributed. Therefore, the bottom line is telling you that $37,904 needs to be contributed by the due date. Out of that $37,904, $20K is for the employer match and the other $17,904 is for the employee.
