GR-based IV means GOODS Receipt based Invoice VERIFICATION. In this process, each receipt of the INDIVIDUAL goods is invoiced separately.

On the other hand, PO-based IV means Purchase Orders based Invoice Verification. In this process, all the items that are in the purchase order list are arranged and are placed together. It is not TAKEN into consideration whether the item is received in a single delivery or multiple deliveries. After all the items are collected, these items are then posted in the form of one single item.

GR-based IV means Goods Receipt based Invoice Verification. In this process, each receipt of the individual goods is invoiced separately.

On the other hand, PO-based IV means Purchase Orders based Invoice Verification. In this process, all the items that are in the purchase order list are arranged and are placed together. It is not taken into consideration whether the item is received in a single delivery or multiple deliveries. After all the items are collected, these items are then posted in the form of one single item.