I'm using SharePoint 2010. I had a number column set to require a unique entry with a minimum value of 5000. After about 40 entries were made to the list the minimum value requirement was changed to 3000. Editing pre-existing entries to change the value to a number under 5000 errors out with a message "Only values greater than or equal to 5000 are allowed." Is it possible to retro-fit this change to the existing list entries so I can modify the values - without using coding?