diff --git a/intrastat_product_type/models/product.py b/intrastat_product_type/models/product.py
index 5f1cd1f..9bd920a 100644
--- a/intrastat_product_type/models/product.py
+++ b/intrastat_product_type/models/product.py
@@ -39,3 +39,23 @@ class ProductTemplate(models.Model):
                     "On product '%s' which is not a consumable, "
                     "Intrastat Type must have the same value as Type.")
                     % pt.display_name)
+
+    # inherit method from intrastat_base
+    @api.constrains("intrastat_type", "is_accessory_cost")
+    def _check_accessory_cost(self):
+        for this in self:
+            if this.is_accessory_cost and this.intrastat_type != "service":
+                raise ValidationError(
+                    _(
+                        "The option 'Is accessory cost?' should only be "
+                        "activated on 'Service' products. You have activated "
+                        "this option for the product '%(product_name)s' which is "
+                        "configured with type '%(product_type)s'."
+                    )
+                    % {
+                        "product_name": this.display_name,
+                        "product_type": this._fields["type"].convert_to_export(
+                            this.type, this
+                        ),
+                    }
+                )
diff --git a/intrastat_product_type/views/product.xml b/intrastat_product_type/views/product.xml
index fe5ff7c..4099fa4 100644
--- a/intrastat_product_type/views/product.xml
+++ b/intrastat_product_type/views/product.xml
@@ -11,11 +11,15 @@
 <record id="product_template_form_view" model="ir.ui.view">
     <field name="name">intrastat_product_type.product.template.form</field>
     <field name="model">product.template</field>
-    <field name="inherit_id" ref="product.product_template_form_view" />
+    <field name="inherit_id" ref="intrastat_base.product_template_form_view" />
+    <field name="priority">150</field>
     <field name="arch" type="xml">
         <field name="detailed_type" position="after">
             <field name="intrastat_type" attrs="{'invisible': [('type', '!=', 'consu')]}"/>
         </field>
+        <field name="is_accessory_cost" position="attributes">
+            <attribute name="attrs">{'invisible': [('intrastat_type', '!=', 'service')]}</attribute>
+        </field>
     </field>
 </record>