You cannot have two resources of the same type with the same name.
When you name a resource, the name must be HTML-compliant. HTML-compliant means that the value you enter in the Name field follows the formatting rules and conventions that the Hyper Text Markup Language allows. For example, you cannot enter spaces between words or use special characters such as an asterisk (*), an ampersand (&), or a period.
When you delete a resource, the name used for that resource becomes available for use again.