How to add number of custom tab in product info detail tab?

Question

I added 3 custom tab in product info detail tab page

   <referenceBlock name="product.info.details">
        <block class="Magento\Catalog\Block\Product\View" name="custom1.tab" as="custom1"  template="product/view/custom1.phtml" group="detailed_info" >
            <arguments>
                <argument translate="true" name="title" xsi:type="string">custom1</argument>
            </arguments>
        </block>                  

        <block class="Magento\Catalog\Block\Product\View" name="custom2.tab" as="custom2"  template="product/view/custom2.phtml" group="custom2" >
            <arguments>
                <argument translate="true" name="title" xsi:type="string">custom2</argument>
            </arguments>
        </block>

        <block class="Magento\Catalog\Block\Product\View" name="custom3.tab" as="custom3"  template="product/view/custom3.phtml" group="custom3" >
            <arguments>
                <argument translate="true" name="title" xsi:type="string">custom3</argument>
            </arguments>
        </block>
    </referenceBlock>

and i call .phtml in seperate files. Frontend gets only "custom3" tab which i placed in last line in .xml file.

Please let me know the corrections in this file

Answer 1

Please try this way :-

<referenceBlock class="Magento\Catalog\Block\Product\View\Details" name="product.info.details" template="Magento_Catalog::product/view/details.phtml">
    <block class="Magento\Catalog\Block\Product\View" name="custom1.tab" as="custom1"  template="product/view/custom1.phtml" group="detailed_info" >
        <arguments>
            <argument translate="true" name="title" xsi:type="string">custom1</argument>
            <argument name="sort_order" xsi:type="string">10</argument>
        </arguments>
    </block>                  

    <block class="Magento\Catalog\Block\Product\View" name="custom2.tab" as="custom2"  template="product/view/custom2.phtml" group="detailed_info" >
        <arguments>
            <argument translate="true" name="title" xsi:type="string">custom2</argument>
             <argument name="sort_order" xsi:type="string">20</argument>
        </arguments>
    </block>

    <block class="Magento\Catalog\Block\Product\View" name="custom3.tab" as="custom3"  template="product/view/custom3.phtml" group="detailed_info" >
        <arguments>
            <argument translate="true" name="title" xsi:type="string">custom3</argument>
             <argument name="sort_order" xsi:type="string">30</argument>
        </arguments>
    </block>
</referenceBlock>

add

group="detailed_info" in all tab