Here are some best practices
http://books.google.com.ua/books?id=4lZcsRwXo6MC&printsec=frontcover&hl=ru&source=gbs_ge_summary_r&cad=0#v=onepage&q=Rule%3A%20404&f=false
And in openstack keystone response http://stack:5000/v2.0/tokens
<error message="The resource could not be found." code="404" title="Not Found"/>
Here are some best practices
http:// books.google. com.ua/ books?id= 4lZcsRwXo6MC& printsec= frontcover& hl=ru&source= gbs_ge_ summary_ r&cad=0# v=onepage& q=Rule% 3A%20404& f=false
And in openstack keystone response stack:5000/ v2.0/tokens
http://
<error message="The resource could not be found." code="404" title="Not Found"/>