Atom Validation Errors at w3.org

Q

How to read Atom validation errors at w3.org?

✍: FYIcenter.com

A

If your Atom feed has errors, the Atom validator at w3.org will detect the errors and provide information to help you to resolve them as shown in this tutorial:

1. Go to Feed Validation Service at w3.org.

2. Click the "Validate by Direct Input" tab. You see a bigger input box for you to enter the Atom XML directly.

3. Enter the following invalid Atom XML:

<feed xmlns="http://www.w3.org/2005/Atom">
     <title>World News</title>
     <subtitle>This is an example of an RSS feed.</subtitle>
     <updated>2029-07-31 12:29:29</updated>
     <link rel="self" href="http://www.world-news.com/"/>
     <id>http://www.world-news.com/</id>
     <editor>
         <name>John Doe</name>
     </editor>
     <entry>
         <title>Breaking News!</title>
         <link rel="alternate" href="http://www.world-news.com/news/53f933c5395f"/>
         <id>http://www.world-news.com/news/53f933c5395f</id>
         <updated>2029-09-15T00:00:00Z</updated>
         <summary>Here is a breaking news that is still on going...</summary>
     </entry> 
</feed>

3. Click the "Check" button. You see the validation errors:

Sorry - This feed does not validate.

line 4, column 29: updated must be an RFC-3339 date-time: 2029-07-31 12:29:29 [help]
  <updated>2029-07-31 12:29:29</updated>
                             ^
line 7, column 1: Undefined feed element: editor [help]
  <editor>
 ^
line 16, column 1: Missing entry element: author [help]
  </entry> 
 ^
In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendations.
line 5, column 53: Self reference doesn't match document location [help]
  <link rel="self" href="http://www.world-news.com/"/>
                                                     ^
line 14, column 31: Implausible date: 2029-09-15T00:00:00Z [help]
    <updated>2029-09-15T00:00:00Z</updated>

Click on "[help]" for more information on each error. Then go back to fix them.

The picture below shows you Atom validation errors at w3.org:

Atom Validator Errors at w3.org
Atom Validator Errors at w3.org

 

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