How do I avoid entering the same kind of data from the same users in sharepoint list?
Any directions please Hari Gillala
No luck going the easy way with Sharepoint 2007. With Sharepoint 2010 you have the choice to make values unique (see SharePoint 2010 – Enforce Unique Values).
With Sharepoint 2007 you have to do that programmatically using an EventReceiver. See following post for lot's of information: How to avoid duplicate record depending on the field in customlist