How to allow dots(.) in Sitecore Item names – 7

Go to Web.config file and find a setting named “ItemNameValidation” and change the validation to allow dots. 

      <!--  ITEM NAME VALIDATION

            Regular expression for validating item names   -->

      <setting name="ItemNameValidation" value="^[\w\*\$][\w\s\-\$]*(\(\d{1,}\)){0,1}$" />

Modified Regular Expression.

      <setting name="ItemNameValidation" value="^[\w\*\$][\w\.\s\-\$]*(\(\d{1,}\)){0,1}$" />