NRV becomes lower than item cost: Is there a functionality to calculate and apply the loss for all i

As per accounting standards IAS 2  inventory needs to be valued at the lower of cost and NRV.

We have 1000's of item codes for finished goods. We are wondering if there is a functionality that checks whether the specified item or group of items' selling price (given in order management price list, perhaps) has fell below the average unit cost in inventory and automatically performs an average cost update when the function is run.