diff --git a/stock_picking_deposito/models/purchase_order.py b/stock_picking_deposito/models/purchase_order.py
index 6c15c69..8ae1845 100644
--- a/stock_picking_deposito/models/purchase_order.py
+++ b/stock_picking_deposito/models/purchase_order.py
@@ -2,34 +2,33 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 from odoo import models, fields, api
-from odoo.exceptions import ValidationError, Warning
+from odoo.exceptions import ValidationError
 
-import pdb
-import logging
-_logger = logging.getLogger(__name__)
 
-class PurchaseOrde(models.Model):
+class PurchaseOrderDesposito(models.Model):
     _inherit = 'purchase.order'
 
     is_deposit = fields.Boolean(
         help='Éste proveedor nos deja material a depósito.',
-        string='Es a depósito',
+        string='A depósito',
     )
     deposit_last_liquidation_date = fields.Datetime(
-        string='Fecha última liquidación compras',
-        help="Cuándo se realizó la última liquidación de compras con éste proveedor."
+        string='Última liquidación',
+        help="La fecha en la que se realizó la última liquidación de compras de éste depósito."
     )
 
-    @api.model
-    def create(self, vals):
-        if self.is_deposit:
-            if not self.partner_id.deposit_buy_accept:
-                raise ValidationError("Este proveedor no suministra material en depósito, configúralo antes de crear un depósito para él.")
-            vals['deposit_last_liquidation_date'] = fields.datetime.now()
-        return super(PurchaseOrde, self).create(vals)
+    @api.model_create_multi
+    def create(self, vals_list):
+        pol = super().create(vals_list)
+        for po in pol:
+            if po.is_deposit:
+                if not po.partner_id.deposit_buy_accept:
+                    raise ValidationError("Este proveedor no suministra material en depósito, configúralo antes de crear un depósito para él.")
+            po.deposit_last_liquidation_date = fields.datetime.now()
+        return pol
 
-    def make_liquidation_invoice(self, context = None):
-        invoice_obj = self.env['account.move']
+    def get_products_sold_sales(self):    
+        product_dict = {}
         if self.deposit_last_liquidation_date:
             sale_orders = self.env['sale.order'].search([
                 ('date_order', '>', self.deposit_last_liquidation_date),
@@ -42,7 +41,6 @@ class PurchaseOrde(models.Model):
                 ('state', 'in', ['sale', 'done'])
             ])
         
-        product_dict = {}
         if sale_orders:
             sale_lines = self.env['sale.order.line'].search([
                 ('order_id', 'in', sale_orders.ids),
@@ -62,9 +60,11 @@ class PurchaseOrde(models.Model):
                         'tax_ids': [(6, 0, line.product_id.supplier_taxes_id.ids)],
                         'quantity': line.product_uom_qty
                     }
-        _logger.warning("product_dict %s", product_dict)
-        pdb.set_trace()
-        pos_orders = False
+
+        return product_dict
+
+    def get_products_sold_pos(self):
+        product_dict = {}
         if self.deposit_last_liquidation_date:
             pos_orders = self.env['pos.order'].search([
                 ('date_order', '>', self.deposit_last_liquidation_date),
@@ -76,7 +76,6 @@ class PurchaseOrde(models.Model):
                 ('lines.product_id', 'in', self.order_line.mapped('product_id').ids),
                 ('state', 'in', ['invoiced', 'done'])
             ])
-        
         if pos_orders:
             pos_lines = self.env['pos.order.line'].search([
                 ('order_id', 'in', pos_orders.ids),
@@ -96,6 +95,12 @@ class PurchaseOrde(models.Model):
                         'tax_ids': [(6, 0, line.product_id.supplier_taxes_id.ids)],
                         'quantity': line.qty
                     }
+        return product_dict
+
+    def make_liquidation_invoice(self, context = None):
+        invoice_obj = self.env['account.move']
+        product_dict = self.get_products_sold_sales()
+        product_dict |= self.get_products_sold_pos() # > Python 3.9
         
         if not product_dict:
             msg = "No se ha vendido ningún producto en depósito de éste proveedor desde la última liquidación.\n\n"
@@ -104,7 +109,7 @@ class PurchaseOrde(models.Model):
             else:
                 msg += "Todavía no se ha realizado ninguna liquidación de compras a éste proveedor."
             raise ValidationError(msg)
-        _logger.warning("product_dict %s", product_dict)
+
         invoice_vals = invoice_obj.default_get(invoice_obj._fields.keys())
         invoice_vals.update({
             'ref': "Liquidación Compras " + self.name,
@@ -117,7 +122,19 @@ class PurchaseOrde(models.Model):
             'purchase_id': self.id,
         })
         invoice = invoice_obj.create(invoice_vals)
+        
+        self.update({'invoice_ids': [(4, invoice.id)]})
+        self.invoice_count = len(self.invoice_ids)
         self.deposit_last_liquidation_date = fields.datetime.now()
+
+        for line in self.order_line:
+            if line:
+                invoice_line = invoice.invoice_line_ids.filtered(lambda x: x.product_id.id == line.product_id.id)
+                if invoice_line:
+                    line.invoice_lines = [(4, invoice_line.id)]
+
+        self.message_post(body="Se ha creado la liquidación de compras %s" % invoice.name)
+
         return {
             'type': 'ir.actions.act_window',
             'res_model': 'account.move',
diff --git a/stock_picking_deposito/models/res_partner.py b/stock_picking_deposito/models/res_partner.py
index 897fedc..26b2fc6 100644
--- a/stock_picking_deposito/models/res_partner.py
+++ b/stock_picking_deposito/models/res_partner.py
@@ -2,71 +2,76 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 from odoo import models, fields, api
-from odoo.exceptions import ValidationError, Warning
+from odoo.exceptions import ValidationError
 
 
 class ResPartner(models.Model):
-     _inherit = 'res.partner'
+    _inherit = 'res.partner'
 
-     deposit_sale_accept = fields.Boolean(
+    deposit_sale_accept = fields.Boolean(
         string='Acepta depósitos de venta',
         help='Éste cliente acepta nuestro material en depósito.',
-     )
-     deposit_buy_accept = fields.Boolean(
+    )
+    deposit_buy_accept = fields.Boolean(
         string='Acepta depósitos de compra',
         help='Éste proveedor nos deja material a depósito.',
-     )
-     deposit_sale_location_id = fields.Many2one(
-         comodel_name='stock.location',
-         string='Ubicación de depósito de ventas',
-         help="Ubicación usada para gestionar el depósito que dejamos a éste proveedor."
-     )
-     deposit_buy_location_id = fields.Many2one(
-         comodel_name='stock.location',
-         string='Ubicación de depósito de compras',
-         help="Ubicación usada para gestionar el material que éste proveedor nos deja en depósito."
-     )
-     deposit_buy_last_liquidation_date = fields.Datetime(
-         string='Fecha última liquidación compras',
-         help="Cuándo se realizó la última liquidación de compras con éste proveedor."
-     )
-     deposit_sale_last_liquidation_date = fields.Datetime(
-         string='Fecha última liquidación ventas',
-         help="Cuándo se realizó la última liquidación de ventas con éste proveedor."
-     )
+    )
+    deposit_sale_location_id = fields.Many2one(
+        comodel_name='stock.location',
+        string='Ubicación de depósito de ventas',
+        help="Ubicación usada para gestionar el depósito que dejamos a éste proveedor."
+    )
+    deposit_buy_location_id = fields.Many2one(
+        comodel_name='stock.location',
+        string='Ubicación de depósito de compras',
+        help="Ubicación usada para gestionar el material que éste proveedor nos deja en depósito."
+    )
+    deposit_buy_last_liquidation_date = fields.Datetime(
+        string='Fecha última liquidación compras',
+        help="Cuándo se realizó la última liquidación de compras con éste proveedor."
+    )
+    deposit_sale_last_liquidation_date = fields.Datetime(
+        string='Fecha última liquidación ventas',
+        help="Cuándo se realizó la última liquidación de ventas con éste proveedor."
+    )
 
-     @api.model
-     def create(self, vals):
-         if vals.get('deposit_sale_accept', False) == True:
-             vals['deposit_sale_location_id'] = self.env['stock.location'].create({
-                 'usage': 'transit',
-                 'name': vals.get('name'),
-                 'location_id': self.env.ref('stock_picking_deposito.stock_location_deposits_stock').id
-                 }).id
-         if vals.get('deposit_buy_accept', False) == True:
-             vals['deposit_buy_location_id'] = self.env['stock.location'].create({
-                 'usage': 'transit',
-                 'name': vals.get('name'),
-                 'location_id': self.env.ref('stock_picking_deposito.location_deposit_buy').id
-                 }).id
-         return super().create(vals)
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            vals = self.create_single(vals)
+        return super().create(vals_list)    
+     
+    def create_single(self, vals):
+        if vals.get('deposit_sale_accept', False) == True:
+            vals['deposit_sale_location_id'] = self.env['stock.location'].create({
+                'usage': 'transit',
+                'name': vals.get('name'),
+                'location_id': self.env.ref('stock_picking_deposito.stock_location_deposits_stock').id
+            }).id
+        if vals.get('deposit_buy_accept', False) == True:
+            vals['deposit_buy_location_id'] = self.env['stock.location'].create({
+                'usage': 'transit',
+                'name': vals.get('name'),
+                'location_id': self.env.ref('stock_picking_deposito.location_deposit_buy').id
+            }).id
+        return vals
 
-     def write(self, vals):
-         if ( vals.get('deposit_sale_accept', False) == True ) and not self.deposit_sale_location_id:
-             vals['deposit_sale_location_id'] = self.env['stock.location'].create({
-                 'usage': 'transit',
-                 'name': self.name,
-                 'location_id': self.env.ref('stock_picking_deposito.stock_location_deposits_stock').id
-                 }).id
-         if ( vals.get('deposit_buy_accept', False) == True ) and not self.deposit_buy_location_id:
-             vals['deposit_buy_location_id'] = self.env['stock.location'].create({
-                 'usage': 'transit',
-                 'name': self.name,
-                 'location_id': self.env.ref('stock_picking_deposito.location_deposit_buy').id
-                 }).id
-         return super().write(vals)
+    def write(self, vals):
+        if ( vals.get('deposit_sale_accept', False) == True ) and not self.deposit_sale_location_id:
+            vals['deposit_sale_location_id'] = self.env['stock.location'].create({
+                'usage': 'transit',
+                'name': self.name,
+                'location_id': self.env.ref('stock_picking_deposito.stock_location_deposits_stock').id
+            }).id
+        if (vals.get('deposit_buy_accept', False) == True ) and not self.deposit_buy_location_id:
+            vals['deposit_buy_location_id'] = self.env['stock.location'].create({
+                'usage': 'transit',
+                'name': self.name,
+                'location_id': self.env.ref('stock_picking_deposito.location_deposit_buy').id
+            }).id
+        return super().write(vals)
 
-     def make_liquidation_buy(self, context = None):
+    def make_liquidation_buy(self, context = None):
         invoice_obj = self.env['account.move']
         search_vals = [
             ('location_id', '=', self.deposit_buy_location_id.id),'|',
@@ -78,26 +83,27 @@ class ResPartner(models.Model):
         move_lines = self.env['stock.move.line'].search(search_vals)
         product_list = []
         for mv in move_lines:
-          new_prod = True
-          for p in product_list:
-              if p[2]['product_id'] == mv.product_id.id:
-                  p[2]['debit'] += mv.qty_done * mv.product_id.standard_price
-                  new_prod = False
-                  break
-          if new_prod:
-              product_list.append([0, False, {
-                  'product_id': mv.product_id.id,
-                  'debit': mv.qty_done * mv.product_id.standard_price,
-                  'name': mv.product_id.name,
-                  'price_unit': mv.product_id.lst_price,
-                  'tax_ids' : mv.product_id.supplier_taxes_id,
-                }
-              ])
+            new_prod = True
+            for p in product_list:
+                if p[2]['product_id'] == mv.product_id.id:
+                    p[2]['debit'] += mv.qty_done * mv.product_id.standard_price
+                    new_prod = False
+                    break
+            if new_prod:
+                product_list.append([0, False, {
+                    'product_id': mv.product_id.id,
+                    'debit': mv.qty_done * mv.product_id.standard_price,
+                    'name': mv.product_id.name,
+                    'price_unit': mv.product_id.lst_price,
+                    'tax_ids' : mv.product_id.supplier_taxes_id,
+                }])
         if len(product_list):
             invoice_vals = invoice_obj.default_get(invoice_obj._fields.keys())
-            inv_lines = []
+            if self.deposit_buy_last_liquidation_date:
+                invoice_vals['ref'] = "Liquidación de compras desde " + self.deposit_buy_last_liquidation_date.strftime("%Y-%m-%d %H:%M:%S")
+            else:
+                invoice_vals['ref'] = "Primera Liquidación de Compras."
             invoice_vals.update({
-                'ref': "Liquidación Compras " + self.deposit_buy_last_liquidation_date.strftime("%d-%m-%Y"),
                 'financial_type': 'payable',
                 'journal_id': self.env.user.company_id.deposit_journal_id.id,
                 'partner_id': self.id,
@@ -106,6 +112,7 @@ class ResPartner(models.Model):
             })
             invoice = invoice_obj.create(invoice_vals)
             self.deposit_buy_last_liquidation_date = fields.datetime.now()
+            self.message_post(body="Se ha creado la liquidación de compras %s" %invoice.name)
             views = [(self.env.ref('account.view_move_form').id, 'form')]
             return {
                 'type': 'ir.actions.act_window',
@@ -122,7 +129,7 @@ class ResPartner(models.Model):
                 msg += "Todavía no se ha realizado ninguna liquidación de compras a éste proveedor."
             raise ValidationError(msg)
 
-     def make_liquidation_sale(self, context = None):
+    def make_liquidation_sale(self, context = None):
         self.deposit_sale_location_id
         sale_order_obj = self.env['sale.order']
         search_vals = [('location_id', '=', self.deposit_sale_location_id.id)]
@@ -149,6 +156,7 @@ class ResPartner(models.Model):
 
             })
             sale_order = self.env['sale.order'].sudo().create(so_vals)
+            self.message_post(body="Se ha creado la liquidación de ventas %s" %sale_order.name)
             views = [(self.env.ref('sale.view_order_form').id, 'form')]
             return {
                 'type': 'ir.actions.act_window',
diff --git a/stock_picking_deposito/models/stock_picking.py b/stock_picking_deposito/models/stock_picking.py
index 70d961f..5d8d086 100644
--- a/stock_picking_deposito/models/stock_picking.py
+++ b/stock_picking_deposito/models/stock_picking.py
@@ -20,13 +20,18 @@ class PickingType(models.Model):
 class Picking(models.Model):
     _inherit = 'stock.picking'
 
-    @api.model
-    def create(self, vals):
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            vals = self.create_single(vals)
+        return super().create(vals_list)
+    
+    def create_single(self, vals):
         if vals.get('picking_type_id'):
             picking_type = self.env['stock.picking.type'].browse(vals.get('picking_type_id'))
             if picking_type.is_deposit:
                 self.change_dest_location(vals, picking_type.code)
-        return super().create(vals)
+        return vals
 
     def write(self, vals):
         if vals.get("picking_type_id"):
diff --git a/stock_picking_deposito/views/purchase_order.xml b/stock_picking_deposito/views/purchase_order.xml
index c1d7257..3c2acc5 100644
--- a/stock_picking_deposito/views/purchase_order.xml
+++ b/stock_picking_deposito/views/purchase_order.xml
@@ -19,9 +19,16 @@
                         class="oe_stat_button"
                         icon="fa-calendar"
                         help="Realiza el informe de liquidación para éste proveedor."
-                        groups="stock.group_stock_manager"
+                        groups="account.group_account_invoice"
+                        attrs="{'invisible': ['|',('is_deposit', '=', False),('state', '!=', 'purchase')]}"
                 />
             </div>
+            <xpath expr="//field[@name='partner_ref']" position="after">
+                <span><label for="is_deposit" /></span>
+                <span><field name="is_deposit" /></span>                
+                <span><label for="deposit_last_liquidation_date" /></span>
+                <span><field name="deposit_last_liquidation_date" /></span>                
+            </xpath>
         </field>
     </record>
 
diff --git a/stock_picking_deposito/views/view_res_partner.xml b/stock_picking_deposito/views/view_res_partner.xml
index 0a998f3..c9d58e2 100644
--- a/stock_picking_deposito/views/view_res_partner.xml
+++ b/stock_picking_deposito/views/view_res_partner.xml
@@ -31,7 +31,7 @@
                     </group>
                     <group attrs="{'invisible': [('deposit_sale_accept', '!=', True)]}"> 
                     <field name="deposit_sale_location_id"  readonly="1" />
-                    <field name="deposit_sale_last_liquidation_date" readonly="1" />
+                    <field name="deposit_sale_last_liquidation_date" readonly="0" />
 <!--                    <button string="Current Stock"
                             class="oe_stat_button"
                             icon="fa-building-o" 
@@ -48,7 +48,7 @@
                     </group> 
                     <group attrs="{'invisible': [('deposit_buy_accept', '!=', True)]}"> 
                     <field name="deposit_buy_location_id" readonly="1" />
-                    <field name="deposit_buy_last_liquidation_date" readonly="1" />
+                    <field name="deposit_buy_last_liquidation_date" readonly="0" />
 <!--                    <button string="Current Stock"
                             class="oe_stat_button"
                             icon="fa-building-o"