A GRN number, or Goods Receipt Number, is a unique identifier in inventory management systems assigned to a goods receipt. When a company receives goods from a supplier, a GRN is generated to record and track the receipt of the items. This number is crucial for maintaining accurate inventory records, ensuring that the correct quantities and types of goods have been delivered, and facilitating the reconciliation of purchase orders with received items. The GRN includes details such as the date of receipt, the supplier's information, the items received, their quantities, and any discrepancies noted during the inspection. This helps manage inventory, process payments, and maintain supply chain accountability.