There are several metrics that can be used to determine the effectiveness of a Warehouse Management System (WMS):

1. Inventory accuracy: This metric measures the accuracy of inventory records and helps determine if the WMS is providing an accurate view of available stock.

2. Order picking accuracy: This metric measures the accuracy of order fulfillment and helps determine if the WMS is providing the right products to the right customers.

3. Order fulfillment time: This metric measures the time it takes to fulfill an order and helps determine if the WMS is helping to streamline the fulfillment process.

4. Labor utilization: This metric measures the efficiency of warehouse workers and helps determine if the WMS is optimizing their use.

5. Storage utilization: This metric measures the efficiency of warehouse space usage and helps determine if the WMS is optimizing storage capacity.

6. Shipping accuracy: This metric measures the accuracy of shipments and helps determine if the WMS is providing accurate and timely deliveries to customers.

Ultimately, the best measurement instrument will depend on the specific goals and objectives of the organization. By analyzing a combination of these metrics, a complete picture of the WMS's effectiveness can be obtained. For more information, please contact "Omneelab Software Pvt. Ltd. for more details to upgrade the "Warehouse Management Software".