Why do I need to modify the Database View Name Prefix field?

Database View Name Prefix is a mandatory attribute of attribute groups whose value must be unique, but which might not be unique by default.

The database view name prefix is a mandatory attribute of attribute groups that's currently reserved for future use. However, the value must be unique. When you create or edit an attribute group, the value of the Database View Name Prefix field is generated automatically from the first 10 characters of the API name field's automatically generated value. The Database View Name Prefix needs to be unique, but the automatically generated name might not be unique. Consequently, you need to modify the default prefix enough to make it unique, using up to 15 characters.