GRN stands for Goods Received Note. GRN/Proof Of Delivery is Record of goods received at the point of receipt of stock. This record is used to confirm all goods have been received and often compared to a purchase order before payment is issued.Your GRN acts as internal proof of goods received to process and match against your supplier invoices/purchase orders. The goods receipt note is an internal document produced after inspecting delivery for proof of order receipt.