All merchants using Recharge can now configure thresholds to partially process an order by removing the items that are not in stock. 

If certain items are out of stock during charge processing, Recharge will modify the order by removing or adjusting the quantity. If the modified order meets all the following criteria, it will be processed.  

1. minimum number of items
2. minimum order value
3. pre-configured 'Required' products are present in the order 

How does it work? Learn more here.