diff --git a/locale/es.po b/locale/es.po
index 313e992..97a1a6b 100644
--- a/locale/es.po
+++ b/locale/es.po
@@ -334,6 +334,34 @@ msgctxt "model:ir.sequence,name:sequence_equipment"
 msgid "Equipment"
 msgstr "Equipos"
 
+msgctxt "field:purchase.line,product_equipment:"
+msgid "Product Equipment"
+msgstr "Es Equipo"
+
+msgctxt "field:purchase.line,software_version:"
+msgid "Software version"
+msgstr "Versión Software"
+
+msgctxt "field:purchase.line,refurbish:"
+msgid "Refurbish"
+msgstr "Restaurado"
+
+msgctxt "view:purchase.line:"
+msgid "Equipment"
+msgstr "Equipo"
+
+msgctxt "field:purchase.line,health_register:"
+msgid "Health Register"
+msgstr "Registro Invima"
+
+msgctxt "field:sale.line,product_equipment:"
+msgid "Product Equipment"
+msgstr "Es Equipo"
+
+msgctxt "field:sale.line,equipment:"
+msgid "Equipment"
+msgstr "Equipo"
+
 
 
 msgctxt "field:sale.configuration,subscription_sequence:"
diff --git a/purchase.py b/purchase.py
index c041fcf..54ae15f 100644
--- a/purchase.py
+++ b/purchase.py
@@ -87,7 +87,7 @@ class Line(metaclass=PoolMeta):
     product_equipment = fields.Boolean("Product Equipment",
                                        states={'readonly': True})
     software_version = fields.Char("Software version")
-    health_register = fields.Char("Registro Medico")
+    health_register = fields.Char("Health Register")
 
     
     @classmethod
diff --git a/sale.py b/sale.py
index 7921749..561a8f5 100644
--- a/sale.py
+++ b/sale.py
@@ -18,7 +18,6 @@ class Sale(metaclass=PoolMeta):
     'Sale'
     __name__ = 'sale.sale'
 
-    
     @classmethod
     @ModelView.button
     @Workflow.transition('confirmed')
@@ -56,7 +55,8 @@ class SaleLine(metaclass=PoolMeta):
     product_equipment = fields.Boolean("Product Equipment")
     equipment = fields.Many2One('optical_equipment.equipment', "Equipment",
                                 domain=[('state', '=', 'registred'),
-                                        ('product','=', Eval('product'))],
+                                        ('product','=', Eval('product'))
+                                        ],
                                 states={'invisible': If(~Eval('product_equipment'), True)},)
     equipment_serial = fields.Char('Serial',states={'readonly': True,
                                                     'invisible': If(~Eval('product_equipment'), True)},
@@ -74,10 +74,8 @@ class SaleLine(metaclass=PoolMeta):
     @fields.depends('product_equipment','equipment')
     def get_serial_equipment(self):
         if self.product_equipment:
-            raise UserError(str(self.equipment.serial))
             return self.equipment.serial
         else:
-            raise UserError(str(self.equipment.serial))
             return None
     
     def on_change_with_unit_digits(self, name=None):
@@ -85,12 +83,13 @@ class SaleLine(metaclass=PoolMeta):
             return self.unit.digits
         return 2
 
-    @fields.depends('equipment', 'sale', '_parent_sale.shipment_address', methods=['on_change_product'])
+    @fields.depends('equipment', 'sale', 'quantity', '_parent_sale.shipment_address', methods=['on_change_product'])
     def on_change_equipment(self):
         if self.equipment:
             self.product = self.equipment.product.id
-            self.address_equipment = self.sale.shipment_address.id
+            self.address_equipment = self.sale.shipment_address.id 
             self.equipment_serial = self.equipment.serial
+            self.quantity = 1
             self.on_change_product()        
         else:
             self.address_equipment = None