diff --git a/__init__.py b/__init__.py
index b614dcd..e282cbe 100644
--- a/__init__.py
+++ b/__init__.py
@@ -45,6 +45,7 @@ def register():
         weighing.Weighing,
         weighing.WeighingPlantation,
         weighing.WeighingDo,
+        weighing.WeighingInvoice,
         weighing.WeighingParcel,
         quality.Configuration,
         quality.ConfigurationCompany,
diff --git a/contract.py b/contract.py
index 7e160f7..8b16d2f 100644
--- a/contract.py
+++ b/contract.py
@@ -41,7 +41,7 @@ class AgronomicsContract(Workflow, ModelSQL, ModelView):
     start_date = fields.Function(
         fields.Date('Start Date'), 'on_change_with_start_date')
     end_date = fields.Function(
-        fields.Date('End Date'), 'on_change_with_start_date')
+        fields.Date('End Date'), 'on_change_with_end_date')
     producer = fields.Many2One(
         'party.party', "Producer", states=_STATES, depends=_DEPENDS,
         required=True)
diff --git a/message.xml b/message.xml
index 966f662..69771d1 100644
--- a/message.xml
+++ b/message.xml
@@ -42,5 +42,8 @@ this repository contains the full copyright notices and license terms. -->
     <record model="ir.message" id="msg_cant_active_contract">
         <field name="text">The contract "%(contract)s" cant be activated because the parcel "%(parcel)s" is in another active contract.</field>
     </record>
+    <record model="ir.message" id="msg_location_no_configured">
+        <field name="text">The weighing center "%(center)s" dont have a to location configured.</field>
+    </record>
   </data>
 </tryton>
diff --git a/tryton.cfg b/tryton.cfg
index 4319058..9b34b27 100644
--- a/tryton.cfg
+++ b/tryton.cfg
@@ -11,6 +11,7 @@ depends:
     quality_control
     production
     stock
+    account_invoice_line_standalone
 xml:
     plot.xml
     party.xml
diff --git a/view/weighing_center_form.xml b/view/weighing_center_form.xml
index 2b3d3e8..d1f81c6 100644
--- a/view/weighing_center_form.xml
+++ b/view/weighing_center_form.xml
@@ -3,4 +3,8 @@
   <field name="name"/>
   <label name="weighing_sequence"/>
   <field name="weighing_sequence"/>
+  <label name="warehouse"/>
+  <field name="warehouse"/>
+  <label name="to_location"/>
+  <field name="to_location"/>
 </form>
diff --git a/view/weighing_form.xml b/view/weighing_form.xml
index 686862d..6459085 100644
--- a/view/weighing_form.xml
+++ b/view/weighing_form.xml
@@ -29,6 +29,8 @@
   <field name="product_created"/>
   <label name="quality_test"/>
   <field name="quality_test"/>
+  <label name="inventory_move"/>
+  <field name="inventory_move"/>
 
   <notebook>
     <page name="plantations">
@@ -37,6 +39,7 @@
     </page>
     <page name="beneficiaries">
       <field name="beneficiaries" colspan="4"/>
+      <field name="beneficiaries_invoices_line" colspan="4"/>
     </page>
     <page string="Parcel Distribution" id="parcel_distribution" >
       <field name="parcels" colspan="4"/>
diff --git a/weighing.py b/weighing.py
index 7031542..0129578 100644
--- a/weighing.py
+++ b/weighing.py
@@ -7,6 +7,7 @@ from trytond.i18n import gettext
 from trytond.exceptions import UserError
 from trytond.transaction import Transaction
 from datetime import datetime
+from decimal import Decimal
 
 class WeighingCenter(ModelSQL, ModelView):
     """ Weighing Center """
@@ -17,7 +18,9 @@ class WeighingCenter(ModelSQL, ModelView):
         domain=[
             ('sequence_type', '=', Id('agronomics', 'sequence_type_weighing'))
         ])
-
+    warehouse = fields.Many2One('stock.location', "Warehouse",
+        domain=[('type', '=', 'warehouse')])
+    to_location = fields.Many2One('stock.location', "To Location")
 
 READONLY = ['processing', 'distributed', 'in_analysis', 'done', 'cancelled']
 READONLY2 = ['draft', 'distributed', 'in_analysis', 'done', 'cancelled']
@@ -86,6 +89,9 @@ class Weighing(Workflow, ModelSQL, ModelView):
             'readonly': Eval('state').in_(READONLY2),
             'required': Eval('state') == 'in_analysis',
             })
+    beneficiaries_invoices_line = fields.Many2Many(
+        'agronomics.weighing-account.invoice.line', 'weighing', 'invoice_line',
+        "Beneficiaries Invoices", readonly=True)
     plantations = fields.One2Many('agronomics.weighing-agronomics.plantation',
         'weighing', 'plantations', states={
             'readonly': Eval('state').in_(READONLY),
@@ -113,6 +119,9 @@ class Weighing(Workflow, ModelSQL, ModelView):
     not_assigned_weight = fields.Function(
         fields.Float('Not Assigned Weight'), 'get_not_assigned_weight')
     forced_analysis = fields.Boolean('Forced Analysis', readonly=True)
+    inventory_move = fields.Many2One('stock.move', "Inventory Move",
+        readonly=True)
+
 
     @classmethod
     def __setup__(cls):
@@ -273,10 +282,23 @@ class Weighing(Workflow, ModelSQL, ModelView):
         pool = Pool()
         Product = pool.get('product.product')
         Quality = pool.get('quality.test')
-        Variety = Pool().get('product.variety')
+        Variety = pool.get('product.variety')
+        Move = pool.get('stock.move')
+        Location = pool.get('stock.location')
+
+        supplier_location = Location.search([('code', '=', 'SUP')], limit=1)
+        if not supplier_location:
+            #Supplier location not found
+            raise UserError()
+
         default_product_values = Product.default_get(Product._fields.keys(),
             with_rec_name=False)
         product = Product(**default_product_values)
+        default_move_values = Move.default_get(Move._fields.keys(),
+                with_rec_name=False)
+        move = Move(**default_move_values)
+
+        to_done = []
         for weighing in weighings:
             if weighing.not_assigned_weight and not weighing.forced_analysis:
                 raise UserError(gettext('agronomics.msg_not_assigned_weight',
@@ -293,7 +315,27 @@ class Weighing(Workflow, ModelSQL, ModelView):
             product.vintages = [weighing.crop.id]
             weighing.product_created = product
 
+            if not weighing.weighing_center:
+                raise UserError()
+
+            # Create Move
+            move.from_location = supplier_location[0]
+            if not weighing.weighing_center.to_location:
+                raise UserError(
+                    gettext('agronomics.msg_location_no_configured',
+                    center=weighing.weighing_center.name))
+            move.to_location = weighing.weighing_center.to_location
+            move.product = weighing.product_created
+            move.uom = weighing.product_created.template.default_uom
+            move.unit_price = weighing.product_created.template.list_price
+            move.quantity = weighing.netweight or 0
+
+            weighing.inventory_move = move
+            to_done.append(move)
+
         cls.save(weighings)
+        with Transaction().set_context(_skip_warnings=True):
+            Move.do(to_done)
         tests = []
         for weighing in weighings:
             tests.append(weighing.create_quality_test())
@@ -395,7 +437,86 @@ class Weighing(Workflow, ModelSQL, ModelView):
     @classmethod
     @Workflow.transition('done')
     def done(cls, weighings):
-        pass
+        pool = Pool()
+        InvoiceLine = pool.get('account.invoice.line')
+        Product = pool.get('product.product')
+        Company = pool.get('company.company')
+        context = Transaction().context
+        ContractProductPriceListTypePriceList = pool.get(
+            'agronomics.contract-product.price_list.type-product.price_list')
+        WeighingInvoiceLine = pool.get(
+            'agronomics.weighing-account.invoice.line')
+        RecomputeCostPrice = pool.get('product.recompute_cost_price',
+            type='wizard')
+        Move = pool.get('stock.move')
+
+        default_invoice_line_values = InvoiceLine.default_get(
+            InvoiceLine._fields.keys(), with_rec_name=False)
+        invoice_line = InvoiceLine(**default_invoice_line_values)
+
+        to_save = []
+        to_save_moves = []
+        to_recompute_products = []
+        for weighing in weighings:
+            cost_price = Decimal(0)
+            if weighing.beneficiaries:
+                for beneficiary in weighing.beneficiaries:
+                    price_list = ContractProductPriceListTypePriceList.search([
+                        ('contract', '=', weighing.purchase_contract),
+                        ('price_list_type', '=',
+                            beneficiary.product_price_list_type),
+                    ])
+
+                    invoice_line = InvoiceLine()
+                    invoice_line.type = 'line'
+                    invoice_line.invoice_type = 'in'
+                    invoice_line.party = beneficiary.party
+                    invoice_line.currency = (
+                        Company(context['company']).currency)
+                    invoice_line.company = Company(context['company'])
+                    invoice_line.description = ''
+                    invoice_line.product = weighing.product_created
+                    invoice_line.on_change_product()
+                    invoice_line.quantity = weighing.netweight or 0
+
+                    unit_price = Product.get_purchase_price(
+                        [weighing.product_created],
+                        abs(weighing.netweight or 0))[
+                            weighing.product_created.id]
+                    if price_list:
+                        if price_list[0].price_list:
+                            price_list = price_list[0].price_list
+                        unit_price = price_list.compute(beneficiary.party,
+                            weighing.product_created, unit_price,
+                            weighing.netweight or 0,
+                            weighing.product_created.template.default_uom)
+                        unit_price = unit_price
+                    invoice_line.unit_price = unit_price
+                    cost_price += unit_price
+
+                    weighing_invoice = WeighingInvoiceLine(
+                        weighing=weighing,
+                        invoice_line=invoice_line
+                    )
+                    to_save.append(weighing_invoice)
+
+            weighing.inventory_move.unit_price = cost_price
+            weighing.inventory_move.unit_price_updated = True
+            weighing.product_created.cost_price = cost_price
+            to_save_moves.append(weighing.inventory_move)
+            to_recompute_products.append(weighing.product_created)
+            Product.save([weighing.product_created])
+
+            session_id, _, _ = RecomputeCostPrice.create()
+            recompute_cost_price = RecomputeCostPrice(session_id)
+            recompute_cost_price.model = Product
+            recompute_cost_price.records = [weighing.product_created]
+            default_values = recompute_cost_price.default_start({})
+            recompute_cost_price.start.from_ = default_values['from_']
+            recompute_cost_price.transition_recompute()
+
+        WeighingInvoiceLine.save(to_save)
+        Move.save(to_save_moves)
 
     @classmethod
     @Workflow.transition('processing')
@@ -448,9 +569,11 @@ class Weighing(Workflow, ModelSQL, ModelView):
         else:
             default = default.copy()
         default.setdefault('beneficiaries', None)
+        default.setdefault('beneficiaries_invoices_line', None)
         default.setdefault('product_created', None)
         default.setdefault('number', None)
         default.setdefault('parcels', None)
+        default.setdefault('inventory_move', None)
         return super().copy(weighings, default=default)
 
 
@@ -463,6 +586,14 @@ class WeighingDo(ModelSQL):
         'Denomination Origin')
 
 
+class WeighingInvoice(ModelSQL):
+    "Weighing - Invoice"
+    __name__ = 'agronomics.weighing-account.invoice.line'
+
+    weighing = fields.Many2One('agronomics.weighing', "Weighing")
+    invoice_line = fields.Many2One('account.invoice.line', "Invoice Line")
+
+
 class WeighingPlantation(sequence_ordered(), ModelSQL, ModelView):
     'Weighing - Plantations'
     __name__ = 'agronomics.weighing-agronomics.plantation'