Vouchers are created by grouping the Detail information by the fields that make a voucher unique. These fields are:
Vendor
Expense Report ID
Pay Vendor
Transaction Currency
Pay Currency
Invoice Date
Pay When Paid Flag
Pay Exchange Rate Date
Pay Amount
When the Import TE Expenses/Advances application assigns voucher numbers, all vouchers are assigned new and unique voucher numbers. The Voucher Key, Voucher Line Key, and Voucher Line Account Key are then set. Rows are inserted into the Voucher Header, Voucher Line, and Voucher Line Account tables. After processing, any temporary tables are cleared to prevent duplicate uploads.