@Geetha, are you managing the inventory within NetSuite and does the item have zero quantity available? If so, the Out of Stock message is controlled by the “Out of Stock Behavior” field on the parent matrix item. The field is located on the item “Web Store” tab in the “Stock and Pricing Behavior” section. You see a generic “Out of Stock” message unless you add a custom message to the “Out of Stock Message” field.