🚫 Excel will never allow negative stock! Tired of manual checks while managing inventory? Here’s a smart Excel trick that ensures your stock never goes negative 💡 ✅ Using Data Validation Custom Formula Formula used: =(B3 C3 - D3) >= 0 🔒 This ensures that every time you enter “Out” quantity, Excel checks if closing stock stays positive — and instantly gives a warning if it turns negative. 📊 Perfect for: Stock Management Sheets Purchase & Sales Reconciliation Real-time Inventory Controls 💬 Tr