{% macro render_groups(admin, form, groups, has_tab) %}
    <div class="row">

    {% for code in groups if admin.formgroups[code] is defined %}
        {% set form_group = admin.formgroups[code] %}

        <div class="{{ form_group.class|default('col-md-12') }}">
            <div class="{{ form_group.box_class }}">
                <div class="box-header">
                    <h4 class="box-title">
                        {{ form_group.label|trans({}, form_group.translation_domain ?: admin.translationDomain) }}
                    </h4>
                </div>
                <div class="box-body">
                    <div class="sonata-ba-collapsed-fields">
                        {% if form_group.description %}
                            <p>{{ form_group.description|raw }}</p>
                        {% endif %}

                        {% for field_name in form_group.fields if form[field_name] is defined %}
                            {{ form_row(form[field_name])}}
                        {% else %}
                            <em>{{ 'message_form_group_empty'|trans({}, 'SonataAdminBundle') }}</em>
                        {% endfor %}
                    </div>
                </div>
            </div>
        </div>
    {% endfor %}
    </div>
{% endmacro %}

{% macro render_groups(admin, form, groups, has_tab) %}
    <div class="row">

    {% for code in groups if admin.formgroups[code] is defined %}
        {% set form_group = admin.formgroups[code] %}

        <div class="{{ form_group.class|default('col-md-12') }}">
            <div class="{{ form_group.box_class }}">
                <div class="box-header">
                    <h4 class="box-title">
                        {{ form_group.label|trans({}, form_group.translation_domain ?: admin.translationDomain) }}
                    </h4>
                </div>
                <div class="box-body">
                    <div class="sonata-ba-collapsed-fields">
                        {% if form_group.description %}
                            <p>{{ form_group.description|trans({}, form_group.translation_domain ?: admin.translationDomain) }}</p>
                        {% endif %}

                        {% for field_name in form_group.fields if form[field_name] is defined %}
                            {{ form_row(form[field_name])}}
                        {% else %}
                            <em>{{ 'message_form_group_empty'|trans({}, 'SonataAdminBundle') }}</em>
                        {% endfor %}
                    </div>
                </div>
            </div>
        </div>
    {% endfor %}
    </div>
{% endmacro %}

Add trans filter to form_group description
Add trans filter to form_group description