https://youtube.com/watch?v=ZVZgJx48ZqAHow to Stop Duplicate Entry in Excel Through Data Validation | Excel Tips and Tricks 👉 Android app link https://play.google.com/store/apps/details?id=co.rios.lmech 👉iOS app link https://apps.apple.com/in/app/classplus/id1324522260 (Use org code- LMECH)