diff --git a/prospect.py b/prospect.py
index 7e3f15b..7ae1120 100644
--- a/prospect.py
+++ b/prospect.py
@@ -17,7 +17,7 @@ class Prospect(ModelSQL, ModelView):
         [('brigade', 'Brigade'),
          ('optics', 'Optics'),
          ('equipment', 'Equipment')],
-        'Business unit'
+        'Business unit', required=True
     )
 
     contact_methods = fields.One2Many(
diff --git a/prospect_trace.py b/prospect_trace.py
index bc9175f..03520df 100644
--- a/prospect_trace.py
+++ b/prospect_trace.py
@@ -16,6 +16,13 @@ class ProspectTrace(DeactivableMixin, ModelSQL, ModelView):
     _states = {'readonly': True}
 
     prospect = fields.Many2One('sale.prospect', 'Prospect', required=True)
+
+    prospect_business_unit = fields.Selection(
+        [('brigade', 'Brigade'),
+         ('optics', 'Optics'),
+         ('equipment', 'Equipment')],
+        'Business unit', states=_states
+    )
     prospect_contact = fields.Many2One(
         'prospect.contact_method', 'Contact method',
         domain=[('prospect', '=', Eval('prospect'))])
@@ -70,11 +77,12 @@ class ProspectTrace(DeactivableMixin, ModelSQL, ModelView):
         if not self.prospect:
             self.prospect_city = None
             self.prospect_contact = None
+            self.prospect_business_unit = None
             return
 
         self.prospect_city = self.prospect.city
+        self.prospect_business_unit = self.prospect.business_unit
         mobile_contact = self._get_prospect_mobile_contact()
-
         if mobile_contact:
             self.prospect_contact = mobile_contact
 
diff --git a/tests/scenario_sale_opportunity_management.rst b/tests/scenario_sale_opportunity_management.rst
index 1a50352..f6e5012 100644
--- a/tests/scenario_sale_opportunity_management.rst
+++ b/tests/scenario_sale_opportunity_management.rst
@@ -185,6 +185,8 @@ Crear seguimiento de prospecto::
 
     >>> prospect_trace.prospect.name
     'guchito S.A.S'
+    >>> prospect_trace.prospect_business_unit
+    'brigade'
     >>> prospect_trace.prospect_city.name
     'Medellín'
     >>> prospect_trace.prospect_contact.value
@@ -194,7 +196,7 @@ Crear seguimiento de prospecto::
     >>> prospect_trace.prospect_contact.job
     'Gerente R.H'
 
-Crear llamadas a un seguimiento de prospecto desde el seguimiento de prospecto::
+Crear llamadas a un seguimiento de prospecto::
     >>> make_call = Wizard('sale.prospect_trace.make_call', [prospect_trace])
     >>> make_call.form.description = 'First call to the prospect'
     >>> make_call.form.interest = '0'
@@ -259,10 +261,11 @@ Cuando se asigna prospecto sin método de contacto mobile, el contacto en el seg
     >>> prospect4.save()
 
     >>> prospect_trace2 = ProspectTrace()
-    >>> prospect_trace2.prospect = prospect2
-
+    >>> prospect_trace2.prospect = prospect4
     >>> prospect_trace2.save()
 
+    >>> prospect_trace2.prospect_contact
+
 
 
 --------
diff --git a/tests/test_required_values.py b/tests/test_required_values.py
index c79840c..4d5b5f4 100644
--- a/tests/test_required_values.py
+++ b/tests/test_required_values.py
@@ -24,6 +24,12 @@ class RequiredValuesTestCase(ModuleTestCase):
         Prospect = pool.get('sale.prospect')
         self.assertTrue(Prospect.name.required)
 
+    @with_transaction()
+    def test_bussiness_unit_en_Prospect_es_obligatorio(self):
+        pool = Pool()
+        Prospect = pool.get('sale.prospect')
+        self.assertTrue(Prospect.business_unit.required)
+
     @with_transaction()
     def test_value_en_ContactMethod_es_obligatorio(self):
         pool = Pool()
diff --git a/view/prospect_trace_form.xml b/view/prospect_trace_form.xml
index 25d0f8a..be01646 100644
--- a/view/prospect_trace_form.xml
+++ b/view/prospect_trace_form.xml
@@ -5,6 +5,8 @@ this repository contains the full copyright notices and license terms. -->
     <group col="6" colspan="5" id="header" yalign="0">
         <label name="prospect"/>
         <field name="prospect"/>
+        <label name="prospect_business_unit"/>
+        <field name="prospect_business_unit"/>
         <label name="prospect_contact"/>
         <field name="prospect_contact"/>
         <label name="prospect_city"/>
diff --git a/view/prospect_trace_tree.xml b/view/prospect_trace_tree.xml
index e542ed7..b16c2b1 100644
--- a/view/prospect_trace_tree.xml
+++ b/view/prospect_trace_tree.xml
@@ -3,6 +3,7 @@
 this repository contains the full copyright notices and license terms. -->
 <tree>
     <field name="prospect" expand="1"/>
+    <field name="prospect_business_unit" expand="1"/>
     <field name="prospect_contact" expand="1"/>
     <field name="prospect_city" expand="1"/>
     <field name="current_interest" expand="1"/>