Lightspeed Negative Inventory Validator

Automatic item quantity validation on sales page in Lightspeed ERP.

This Chrome extension integrates real-time inventory validation into the Lightspeed R-Series sales workflow. It checks item stock levels through Oracle Fusion APIs each time a product is added to the cart. If the inventory is zero or negative, the extension disables the “Payment” button and displays an error message, preventing the transaction from proceeding until the issue is resolved.