This POS option in Options Configuration determines if the system uses the order number as the invoice number when transactions, which were originally orders or special orders, are invoiced.
Y = If the transaction was originally an order or special order, the order number is used as the invoice number when the transaction is invoiced. The Alt Journal # Usage field must be set to Y when you select this option.
N = If the transaction was originally an order or special order, the next invoice number from the Next Invoice Number field will be used when the transaction is invoiced.
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Note: If this field is Y, only the first invoice from the order or special order can inherit the original order number.