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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.

Checkpoint 1 - Designing URLs

Conformance: Mandatory

Agencies must design URLs to last.

Checkpoint 2 - Moving a resource

Conformance: Mandatory

When a resource is moved, an appropriate HTTP status message must be presented at the disused URL.

Checkpoint 3 - Removing a resource

Conformance: Mandatory

When a resource is removed, an appropriate HTTP status message must be presented at the disused URL.

Checkpoint 4 - Aliasing a resource

Conformance: Mandatory

When more than one URL exists for a resource, all alternate URLs must redirect to the primary URL using an appropriate HTTP status message.

Checkpoint 5 - Appropriate use of HTTP methods

Conformance: Mandatory

HTTP methods must be used appropriately.

Checkpoint 6 - Handling errors

Conformance: Desirable

An appropriate HTTP status message should be presented to the user/agent when an error condition occurs.

Checkpoint 7 - Using best fit statuses

Conformance: Desirable

Avoid the use of HTTP statuses 200, 302 or 404 where more appropriate HTTP statuses exist.