This error occurs when the total liability for the quarter amount on the 941 line 16 or the Schedule B does not match the amount on the 941, line 12. This usually happens when the total deposits made for the quarter are entered on the 941 line 16 or on the Schedule B instead of the total liabilities.
Return to the 941 line 16, if you are a monthly scheduled depositor and enter the tax liability for each month. If you are a semi-weekly scheduled depositor, return to the Schedule B and enter the tax liability for each day of each month. Then, verify that the deposit amount was correctly entered on the 941, line 13.