System Variable 649: Add New Voucher: Check Creditor Invoice for Duplicate Number within +/- X Days

Use this System Variable to determine the number of days that WorkBook should look back in time for duplicate voucher numbers.

In the field of this System Variable, you can enter the number of days that you want WorkBook to look back and search for posted creditor vouchers with the same number from the same creditor.

It may be necessary to perform a refresh when modifying System Variable values.