If the vendor was not flagged as a 1099 vendor for the entire year but should have been, the amounts paid to the vendor before they were flagged as such will not be included in the 1099 amounts and must be initialized into the Vendor Maintenance screen while in Initialize Mode to correct them.
If a vendor was flagged as a 1099 vendor but vouchers were entered for the vendor without a 1099 box number specified when the vouchers were paid, the amounts would not be recorded as 1099 amounts. The amounts must be initialized into the Vendor Maintenance screen | 1099 Info. tab while in Initialize Mode to correct them.