Fix Missing Required Field Updated Error

Its time to fix some common errors in you blog. In this blog post we are going to discus common structured data errors. You can use Google webmaster tools to detect them.Google already added Structured Data in blogger templates but there's a common error in Structured Data markup like Missing Required field, not part of schema, etc.
This common error affect your search appearance and affect your site crawling.
This microformat has a common problem such as missing required field updated. This affect search appearance. To correct this use the guide below:

Missing Required Field Updated

This means that Search engine can't find date it was published or last updated.
To fix it use the guide below:
Find this code:

<data:post.timestamp/>

Replace it with this code:

<span class='updated'><data:post.timestamp/></span>