Prior to creating your 1099 Work File, you should run the Total Vendor Payments Report located under Accounts Payable Reports. Run the report for the same year you are reporting the 1099s. You may then compare the information on this report to the results of the 1099 work file created. You will need to look for vendor you know should receive a 1099 form and make sure they are in the 1099 work file and that the YTDPayments amount shown in the 1099 work file is correct.