You can avoid creating duplicate work orders and invoices by getting warning messages about existing work orders and invoices created for the same vehicle.
To turn on checking VIN duplicates
1. Define the period within which VIN duplicates must be checked.
On the Company tab, click Company Info, and then on the Company Settings tab, click the appropriate period in the Duplicates by VIN History box, and click Save Settings.
2. Define clients for which VIN duplicates must be checked.
On the Company tab, click Clients, and then click Edit next to the appropriate client.
In the Client dialog box, select the Vehicle History Enforced check box, and then click OK.
3. Define types of work orders for which VIN duplicates must be checked.
On the Company tab, click Work Order Types, and then click Edit next to the appropriate type.
In the Work Order Type dialog box, select the Vehicle History Enforced check box, and then click OK.
Now when you enter or scan a VIN while creating a work order for clients or types with the Vehicle History Enforced setting, the system will search for the same VIN in invoices and work orders created within the defined time period, and show you the appropriate warning messages.