Excel short tips Short Tips#0042: Avoid data input error by Data Validation Pushpendu Roy Karmakar Sep 2, 2018 No Comments Tagged with DATA VALIDATION See also Excel for Freelancers: Managing Finances and Invoices About Pushpendu Roy Karmakar Hi! I am Pushpendu. I am the founder and author of Excelabcd. I am little creative person, blogger and Excel-maniac guy. I hope you enjoy my blog.