If you use sales or purchase order processing you can set to zero:
You are not likely to need to use this facility very often. It will be most useful to you if you have just installed your Sage 200 modules and have been entering test data. You will want to clear this before you begin to work with live data. For more information on setting up a test company to enter test data see adding a company in System Administration.
The order values stored on all customer and supplier records are set to zero.
Within Sales Ledger or Purchase Ledger:
Open: Utilities > File Maintenance > Clear SOP Totals or Clear POP Totals.
Other tasks