How to Fix Errors on Google Webmaster Tools Structured Data

Recently, I have noticed a lot of errors on my Webmaster Tools Structured Data. I researched it further and it seems that it does not affect on search results. But even so, I wanted to remove all these errors for the sake of contentment. Below are the lists of errors I encountered on my Webmaster Tools Structured Data:

Error: Missing required field "updated".
Error: Page contains property "image_url" which is not part of the schema.
Error: Page contains property "blogid" which is not part of the schema.
Error: Page contains property "postid" which is not part of the schema.

You do not have to worry, as we have a simple solution for your problem. Let's discussed first the "Error: Missing required field "updated"." and how to resolve this.

Step 1. Go to your Bloggers Template.

Step 2. Click on "Edit HTML".

Step 3. Find <data:post.timestamp/>

Step 4. Replace the code with
<span class='updated'><data:post.timestamp/></span>

Step 5. Save Template.

Now, go to Structured Data Testing Tool to check if the error still occurs.

Just in case you haven't verified your Authorship, here's a simpler way on how to verify it.

Step 1. Add an HTML Gadget and create a link to your Google+ profile from your webpage, like this: <a href="[profile_url]?rel=author">Google</a>

Step 2. Replace [profile_url] with the your Google+ profile URL, like this: <a href="https://plus.google.com/109412257237874861202?rel=author">Google</a>

Note: Your link must contain the ?rel=author parameter. If it's missing, Google won't be able to associate your content with your Google+ profile.

Step 3. Add a reciprocal link back from your profile to the site(s) you just updated.

•      Step 3.1. Edit the Contributor To section.
•      Step 3.2. In the dialog that appears, click Add custom link, and then enter the website URL.
•      Step 3.3. If you want, click the drop-down list to specify who can see the link.
•      Step 3.4. Click Save.

To see what author data Google can extract from your page, use the structured data testing tool.

Once that it is already verified, then you can removed the HTML Gadget you made on your Layout.

Let's proceed on resolving your Errors on Webmaster Tools. How to resolve "Error: Page contains property "image_url" which is not part of the schema."

Step 1. Go to your Bloggers Template.

Step 2. Click on "Edit HTML".

Step 3. Find <meta expr:content='data:post.firstImageUrl' itemprop='image_url'/>

Step 4. Replace the code with <meta expr:content='data:post.firstImageUrl' itemprop='image'/>Step 5. Save Template.

Now, resolving the Errors "Error: Page contains property "blogid" which is not part of the schema." and "Error: Page contains property "postid" which is not part of the schema."

Step 1. Go to your Bloggers Template.

Step 2. Click on "Edit HTML".

Step 3. Find <meta expr:content='data:blog.blogId' itemprop='blogId'/> and <meta expr:content='data:post.id' itemprop='postId'/>

Step 4. You will just need to delete them from your template. You will find them twice on your Blogger's Template, make sure that you will all of them.
Step 5. Save Template.

After I made these steps on my blog, the Errors are slowly dropping down.