I am using the Google structured data testing tool to validate a site. All seems to work fine however I have not been able to solve the following warning (although availability is clearly present)Warning: In order to generate a preview with rich snippets, either  price or review or availability needs to be present.A typical url that triggers the warning: https://cartridgeshop.nu/en/hp-364xl-zwart-cn684ee/Am I missing the obvious?Source:<div class=row-fluid>    <div class=span12>        <div class=product-wrapper padding_10px margin_bottom_20px itemscope=             itemtype=http://data-vocabulary.org/Product>            <div class=padding_10px>                <div class=row-fluid margin_bottom_20px>                    <div class=span4>                        <div><img                                src=https://cartridgeshop.nu/media/cache/shop/product/364xl-zwart-cn684ee/364xlzwart_1_thumbnail.jpg                                style=></div>                    </div>                    <div class=span8>                        <meta itemprop=category                              content=Electronics &gt; Print, Copy, Scan &amp; Fax Accessories &gt; Printer Accessories &gt; Printer Consumables>                        <h1 class=enhanced><span itemprop=brand>Hewlett Packard</span>&nbsp;<span itemprop=name>364XL</span>                            Zwart</h1><a class=small href=/admin/shop/product/53/>Bewerk product</a>                        <p class=small margin_top_10px><span itemprop=description>Origineel HP 364XL inktpatroon. Met HP inktcartridges print je gemakkelijk en voordelig. Snel en gemakkelijk cartridges plaatsen: unieke kleurcodering zorgt dat de juiste cartridge op de juiste plaats komt. Goedkope HP cartridges bestellen doe je bij cartridgeshop.nu!</span>                        </p>                        <p class=small margin_top_10px style=color:red;font-weight:bold;>Wij raden u aan te kiezen                            voor onze compatible Hewlett Packard cartridges. Met onze goedkope cartridge bespaar je op                            de inkt kosten met behoud van kwaliteit.</p></div>                </div>                <div class=row-fluid itemscope= itemtype=http://data-vocabulary.org/Offer>                    <div class=span12>                        <table class=table small>                            <thead>                            <tr>                                <th></th>                                <th style=width:178px>Origineel</th>                                <th style=width:178px>Huismerk <span                                        style=color:red;font-weight:bold;display:inline-block;margin-left:4px;>Bespaar 49%</span>                                </th>                            </tr>                            </thead>                            <tbody>                            <tr>                                <td>prijs incl. 21% BTW</td>                                <td>                                    <meta itemprop=currency content=EUR>                                    <meta itemprop=condition content=new>                                    <h3 class=enhanced margin_bottom_10px> <span itemprop=price>16,50</span></h3>                                    <div class=input-append><input                                            style=margin-bottom:1px;width:24px;text-align:center;font-size:1.052em;                                            type=text value=1><a                                            onclick=addToCart(53, $(this).parent().find('input').val())                                            class=btn btn-primary btn-small><i                                            class=icon-white icon-shopping-cart-add></i> bestel</a></div>                                </td>                                <td class=success><h3 class=enhanced margin_bottom_10px> 16,68</h3>                                    <div class=input-append><input                                            style=margin-bottom:1px;width:24px;text-align:center;font-size:1.052em;                                            type=text value=1><a                                            onclick=addToCart(326, $(this).parent().find('input').val())                                            class=btn btn-success btn-small><i                                            class=icon-white icon-shopping-cart-add></i> bestel</a></div>                                </td>                            </tr>                            <tr>                                <td>pagina's</td>                                <td>550p</td>                                <td class=success>-</td>                            </tr>                            <tr>                                <td>milliliter</td>                                <td>13ml</td>                                <td class=success><strong style=color:red;>25,6ml</strong></td>                            </tr>                            <tr>                                <td>foto's (10x15)</td>                                <td>-</td>                                <td class=success>-</td>                            </tr>                            <tr>                                <td>code</td>                                <td><span itemprop=identifier content=sku:CN684EE>CN684EE</span></td>                                <td class=success>CN684EEC</td>                            </tr>                            <tr>                                <td>kleur</td>                                <td colspan=2><img src=https://cartridgeshop.nu/static/shop/img/colors/1.png> Zwart                                </td>                            </tr>                            <tr>                                <td>geschikte printers</td>                                <td colspan=2><p class=small><a href=/shop/printers/hp/deskjet/3070a/>Deskjet                                    3070A</a>,                                    <a href=/shop/printers/hp/deskjet/3520e-aio/>Deskjet 3520e AiO</a>,                                    <a href=/shop/printers/hp/officejet/4620/>Officejet 4620</a>,                                    <a href=/shop/printers/hp/officejet/4622/>Officejet 4622</a>,                                    <a href=/shop/printers/hp/photosmart/5510-2/>Photosmart 5510</a>,                                    <a href=/shop/printers/hp/photosmart/5515-2/>Photosmart 5515</a>,                                    <a href=/shop/printers/hp/photosmart/5520/>Photosmart 5520</a>,                                    <a href=/shop/printers/hp/photosmart/6510/>Photosmart 6510</a>,                                    <a href=/shop/printers/hp/photosmart/6520-2/>Photosmart 6520</a>,                                    <a href=/shop/printers/hp/photosmart/7510/>Photosmart 7510</a>,                                    <a href=/shop/printers/hp/photosmart/7520/>Photosmart 7520</a>,                                    <a href=/shop/printers/hp/photosmart/b010a/>Photosmart B010a</a>,                                    <a href=/shop/printers/hp/photosmart/b109adfn/>Photosmart B109a/d/f/n</a>,                                    <a href=/shop/printers/hp/photosmart/b110ace/>Photosmart B110a/c/e</a>,                                    <a href=/shop/printers/hp/photosmart/b8550/>Photosmart B8550</a>,                                    <a href=/shop/printers/hp/photosmart/c5324/>Photosmart C5324</a>,                                    <a href=/shop/printers/hp/photosmart/c5380/>Photosmart C5380</a>,                                    <a href=/shop/printers/hp/photosmart/c6324/>Photosmart C6324</a>,                                    <a href=/shop/printers/hp/photosmart/c6380/>Photosmart C6380</a>,                                    <a href=/shop/printers/hp/photosmart/d5460/>Photosmart D5460</a>,                                    <a href=/shop/printers/hp/photosmart-estation/c510a/>Photosmart eStation C510a</a>,                                    <a href=/shop/printers/hp/photosmart-plus/b209ac/>Photosmart Plus B209a/c</a>,                                    <a href=/shop/printers/hp/photosmart-plus/b210ac/>Photosmart Plus B210a/c</a>,                                    <a href=/shop/printers/hp/photosmart-premium/c309ang/>Photosmart Premium                                        C309a/n/g</a>,                                    <a href=/shop/printers/hp/photosmart-premium/c310a/>Photosmart Premium C310a</a>,                                    <a href=/shop/printers/hp/photosmart-premium/c410b/>Photosmart Premium C410b</a>                                </p></td>                            </tr>                            </tbody>                        </table>                        <span class=small><strong>Disclaimer</strong><br>De werkelijke opbrengst en/of besparing varieert afhankelijk van de gebruikte printer, de geprinte foto's en andere factoren.</span>                    </div>                </div>            </div>        </div>    </div></div>
Warning in Google structured data: either price or review or availability needs to be present
google;google search console;structured data
Under Product, you were missing offerDetails in the following line, which nests Offer:<div class=row-fluid itemscope= itemtype=http://data-vocabulary.org/Offer>Hence, the item in the Offer wasn't nested under Product so the price wasn't found, and an error was being displayed regarding the price not being present, as can be seen here (providing Google retains the test).So changing that to the following will correct the error:<div class=row-fluid itemprop=offerDetails itemscope= itemtype=http://data-vocabulary.org/Offer>As can be seen here (providing Google retains the test).You might find it helpful to compare your code with the example here under Singe product page.