<?xml version="1.0" ?>

<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">

    <services>
        <service id="ddeboer_vatin.validator"
                 class="Ddeboer\VatinBundle\Validator\Constraints\VatinValidator">
            <argument type="service" id="ddeboer_vatin.vatin_validator" />
            <tag name="validator.constraint_validator" alias="ddeboer_vatin.validator" />
        </service>
        <service id="ddeboer_vatin.vatin_validator" class="Ddeboer\Vatin\Validator" public="false">
            <argument type="service" id="ddeboer_vatin.vies.client" />
        </service>
        <service id="ddeboer_vatin.vies.client" class="Ddeboer\Vatin\Vies\Client" public="false">
        </service>
    </services>

</container>

<?xml version="1.0" ?>

<container xmlns="http://symfony.com/schema/dic/services"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">

    <services>
        <service id="ddeboer_vatin.validator"
                 class="Ddeboer\VatinBundle\Validator\Constraints\VatinValidator">
            <argument type="service" id="ddeboer_vatin.vatin_validator" />
            <tag name="validator.constraint_validator" alias="ddeboer_vatin.validator" />
        </service>
        <service id="ddeboer_vatin.vatin_validator" class="Ddeboer\Vatin\Validator" public="false">
            <call method="setViesClient">
                <argument type="service" id="ddeboer_vatin.vies.client" />
            </call>
        </service>
        <service id="ddeboer_vatin.vies.client" class="Ddeboer\Vatin\Vies\Client" public="false">
        </service>
    </services>

</container>

Change contructor argument to setter
Change contructor argument to setter