A new system parameter has been created which will allow users to select at a system wide level to warn users where a duplicate customer order number has been entered on an invoice/sales order.

Example of Duplicate Customer Order Number warning for Sales Order Entry/Maintenance

Example of Duplicate Customer Order Number warning for POS Transactions
Please refer to System Parameter Maintenance for more information.
Where your company doesn't want to have this warning switched on for all customers, it can be switched on at a customer level by selecting one of the new options in the Force Cust Ord No field on the General Information Tab of Customer Masterfile Maintenance. Please refer to Customer Masterfile Maintenance - General Information Tab for more information.