Can I use duplicate Schema.org 'url' in a table raw?

Question

If some <td> are URLs for the same product, do I need to mark each as url? Only one? Is it an error to mark them all?

Is the following code is valid?

<tr itemscope itemtype="http://schema.org/Product">
  <td itemprop="name"><a itemprop="url" href="myUrl.html">my product name</a></td>
  <td><a itemprop="url" href="myUrl.html"><img src="img.jpg" /></a></td>
</tr>

Answer 1

It’s not useful to provide multiple url properties if the URL is the same.

Interested consumers learn that this Product has this url. When this url is provided multiple times, it’s not conceivable that it would change the consumer’s interpretation.

But it shouldn’t hurt either. It’s not an error.