title: AMP Pages & Content Mismatch between AMP and canonical pages
body: <p>I have a regular website that works well on mobile devices, I use a header and footer with all pages and .php extension for the pages and .html on the header and footer.
  A couple of weeks ago I decided to create an AMP version of my website, and decided that I would only create one AMP page with a canonical reference back to my main page - I only wanted to create 1 AMP page.</p>
  
  <p>So on my non AMP page (in the header.html) I declare</p>
  
  <pre><code>&lt;link rel="amphtml" href="https://example.com/amp/local-web-design.php" /&gt;
  </code></pre>
  
  <p>And on my AMP page which is not using headers and footer but is still a .php extension page I declare</p>
  
  <pre><code>&lt;link rel="canonical" href="https://example.com/homepage.php" /&gt;
  </code></pre>
  
  <p>Google served up the page to mobiles a total of 5 times in three days and then subsequently decided that it did not like that I did not have all my other pages which hang off the non AMP page converted to AMP pages, including the privacy and contact page.  For a start the contact page has a form which is not supported by AMP.</p>
  
  <p>Google Webmaster Console shows no errors, but has the following 'info issues'</p>
  
  <p>Info:Missing structured data element<br>
  Content mismatch between AMP and canonical pages</p>
  
  <p>All seem to be referring to the fact that I have not created all the other additional pages &amp; the only error listed is "a value for the <i>image</i> field is required".</p>
  
  <p>I could create AMP pages for all the other pages, which incidentally show off our work and customers in different towns, but how then would I declare them all in the header.html with </p>
  
  <pre><code>&lt;link rel="amphtml" ...&gt; 
  </code></pre>
  
  <p>as the header serves all pages for my non AMP website.  Can I just use multiple link rel's?</p>
  
  <pre><code>&lt;link rel="canonical" href="https://example.com/page1.php" /&gt;
  &lt;link rel="canonical" href="https://example.com/page2.php" /&gt;
  </code></pre>
  
  <p>I should also mention that if I test the AMP page with the following it passes with flying colors</p>
  
  <pre><code>https://validator.ampproject.org/#url=https://example.com/amp/local-web-design.php
  </code></pre>