Retailer Line Reference
The Retailer Line Reference will be a required field for MPS, Chicago Distribution Center, Scholastic, Penguin Random House US and CA until an adjustment to the system can be made.
If the Retailer Line Reference is required, copy and paste the same PO# in the Retailer Line Reference field for each line item on an order.
This is an advanced feature, used only in special cases since the retailer line reference overwrites your PO number. A few retailers like to use this field to indicate customer special orders. However, using this feature may make it harder for you to check order status with publisher customer service reps and your publisher paperwork will reflect the retailer line reference, making it harder to match up with your purchase order in your POS.
Please note that you can only use one retailer line reference per ISBN per order.