2 different invoice numbers generated in 2 lines of one credit order from history for the same item

Hi All,

• In an issue reported by a business user , a credit order created from history had 2 different invoice numbers generated when the invoice report was executed at the same time for both the lines.

• Line#1.000 and line#2.000 of a credit order were created from history (using credit memo) for lines#4.000 and 4.001 of the original sales order.
• Both the lines are for same item + bp+ location + lot combination.
• User did shipment confirmation for credit order lines and then generated invoice for both lines at the same time.
• However , two different invoice numbers go generated in line#1.000 and line#2.000 of the credit order even though item number , bp , location and lot are same for both the lines.