Module 3: Checkpoint summary
All of the requirements and their conformance levels for this module are presented here. This summary can be used as a quick checklist for evaluating web pages.
Agencies must design URLs to last.
When a resource is moved, an appropriate HTTP status message must be presented at the disused URL.
When a resource is removed, an appropriate HTTP status message must be presented at the disused URL.
When more than one URL exists for a resource, all alternate URLs must redirect to the primary URL using an appropriate HTTP status message.
HTTP methods must be used appropriately.
An appropriate HTTP status message should be presented to the user/agent when an error condition occurs.
Avoid the use of HTTP statuses 200, 302 or 404 where more appropriate HTTP statuses exist.