diff --git a/addons/account/models/account_journal.py b/addons/account/models/account_journal.py
index 97ece215bc9ce..88f63dd7f1b1b 100644
--- a/addons/account/models/account_journal.py
+++ b/addons/account/models/account_journal.py
@@ -434,8 +434,8 @@ def _check_payment_method_line_ids_multiplicity(self):
         method_ids = [res[0] for res in self._cr.fetchall()]
         if method_ids:
             methods = self.env['account.payment.method'].browse(method_ids)
-            raise ValidationError(_("Some payment methods supposed to be unique already exists somewhere else.\n"
-                                    "(%s)", ', '.join([method.display_name for method in methods])))
+            # raise ValidationError(_("Some payment methods supposed to be unique already exists somewhere else.\n"
+            #                         "(%s)", ', '.join([method.display_name for method in methods])))
 
     @api.constrains('active')
     def _check_auto_post_draft_entries(self):
diff --git a/addons/account/models/account_move.py b/addons/account/models/account_move.py
index c8ab80c7e54e6..be01328c1983f 100644
--- a/addons/account/models/account_move.py
+++ b/addons/account/models/account_move.py
@@ -1965,8 +1965,8 @@ def _compute_always_tax_exigible(self):
             # set the tags as well, during the encoding. So, if no receivable/payable
             # line has been created yet, the invoice would be detected as always exigible,
             # and set the tags on some lines ; which would be wrong.
-            record.always_tax_exigible = not record.is_invoice(True) \
-                                         and not record._collect_tax_cash_basis_values()
+            record.always_tax_exigible = not record.is_invoice(True) #\
+                                        #  and not record._collect_tax_cash_basis_values()
 
     @api.depends('restrict_mode_hash_table', 'state')
     def _compute_show_reset_to_draft_button(self):
diff --git a/addons/account/models/account_payment.py b/addons/account/models/account_payment.py
index df42f2c050bb4..ee4d90bec9642 100644
--- a/addons/account/models/account_payment.py
+++ b/addons/account/models/account_payment.py
@@ -638,7 +638,8 @@ def _check_payment_method_line_id(self):
         '''
         for pay in self:
             if not pay.payment_method_line_id:
-                raise ValidationError(_("Please define a payment method line on your payment."))
+                # raise ValidationError(_("Please define a payment method line on your payment."))
+                pass
 
     # -------------------------------------------------------------------------
     # LOW-LEVEL METHODS
diff --git a/addons/hr_expense/models/hr_expense.py b/addons/hr_expense/models/hr_expense.py
index 11e205c0d260f..41fdc91142e4c 100644
--- a/addons/hr_expense/models/hr_expense.py
+++ b/addons/hr_expense/models/hr_expense.py
@@ -881,7 +881,7 @@ def _default_bank_journal_id(self):
     employee_id = fields.Many2one('hr.employee', string="Employee", required=True, readonly=True, tracking=True, states={'draft': [('readonly', False)]}, default=_default_employee_id, check_company=True, domain= lambda self: self.env['hr.expense']._get_employee_id_domain())
     address_id = fields.Many2one('res.partner', compute='_compute_from_employee_id', store=True, readonly=False, copy=True, string="Employee Home Address", check_company=True)
     payment_mode = fields.Selection(related='expense_line_ids.payment_mode', readonly=True, string="Paid By", tracking=True)
-    user_id = fields.Many2one('res.users', 'Manager', compute='_compute_from_employee_id', store=True, readonly=True, copy=False, states={'draft': [('readonly', False)]}, tracking=True, domain=lambda self: [('groups_id', 'in', self.env.ref('hr_expense.group_hr_expense_team_approver').id)])
+    user_id = fields.Many2one('res.users', 'Manager', compute='_compute_from_employee_id', store=True, readonly=True, copy=False, states={'draft': [('readonly', False)]}, tracking=True)
     total_amount = fields.Monetary('Total Amount', currency_field='currency_id', compute='_compute_amount', store=True, tracking=True)
     amount_residual = fields.Monetary(
         string="Amount Due", store=True,
diff --git a/addons/hr_holidays/models/hr_leave.py b/addons/hr_holidays/models/hr_leave.py
index ee4447415d277..9272097116c07 100644
--- a/addons/hr_holidays/models/hr_leave.py
+++ b/addons/hr_holidays/models/hr_leave.py
@@ -438,9 +438,11 @@ def _compute_from_employee_ids(self):
         for holiday in self:
             if len(holiday.employee_ids) == 1:
                 holiday.employee_id = holiday.employee_ids[0]._origin
+                holiday.multi_employee = False
             else:
                 holiday.employee_id = False
-            holiday.multi_employee = (len(holiday.employee_ids) > 1)
+                holiday.multi_employee = True
+            # holiday.multi_employee = (len(holiday.employee_ids) > 1)
 
     @api.depends('holiday_type')
     def _compute_from_holiday_type(self):
@@ -622,9 +624,9 @@ def _check_date(self):
                 ('state', 'not in', ['cancel', 'refuse']),
             ]
             nholidays = self.search_count(domain)
-            if nholidays:
-                raise ValidationError(
-                    _('You can not set 2 time off that overlaps on the same day for the same employee.') + '\n- %s' % (holiday.display_name))
+            # if nholidays:
+            #     raise ValidationError(
+            #         _('You can not set 2 time off that overlaps on the same day for the same employee.') + '\n- %s' % (holiday.display_name))
 
     @api.constrains('state', 'number_of_days', 'holiday_status_id')
     def _check_holidays(self):
@@ -641,9 +643,9 @@ def _check_holidays(self):
     def _check_date_state(self):
         if self.env.context.get('leave_skip_state_check'):
             return
-        for holiday in self:
-            if holiday.state in ['cancel', 'refuse', 'validate1', 'validate']:
-                raise ValidationError(_("This modification is not allowed in the current state."))
+        # for holiday in self:
+        #     if holiday.state in ['cancel', 'refuse', 'validate1', 'validate']:
+        #         raise ValidationError(_("This modification is not allowed in the current state."))
 
     def _get_number_of_days(self, date_from, date_to, employee_id):
         """ Returns a float equals to the timedelta between two dates given as string."""
diff --git a/addons/hr_holidays/models/hr_leave_allocation.py b/addons/hr_holidays/models/hr_leave_allocation.py
index b2231f0d0fda4..13ddd9877ddf0 100644
--- a/addons/hr_holidays/models/hr_leave_allocation.py
+++ b/addons/hr_holidays/models/hr_leave_allocation.py
@@ -248,9 +248,11 @@ def _compute_from_employee_ids(self):
         for allocation in self:
             if len(allocation.employee_ids) == 1:
                 allocation.employee_id = allocation.employee_ids[0]._origin
+                allocation.multi_employee = False
             else:
                 allocation.employee_id = False
-            allocation.multi_employee = (len(allocation.employee_ids) > 1)
+                allocation.multi_employee = True
+            # allocation.multi_employee = (len(allocation.employee_ids) > 1)
 
     @api.depends('holiday_type')
     def _compute_from_holiday_type(self):
diff --git a/addons/hr_holidays/views/hr_leave_views.xml b/addons/hr_holidays/views/hr_leave_views.xml
index 6e1312a874e5c..5c64448676a9e 100644
--- a/addons/hr_holidays/views/hr_leave_views.xml
+++ b/addons/hr_holidays/views/hr_leave_views.xml
@@ -364,8 +364,11 @@
         <field name="mode">primary</field>
         <field name="priority">17</field>
         <field name="arch" type="xml">
-            <xpath expr="//group[@name='col_left']" position="attributes">
+            <!-- <xpath expr="//group[@name='col_left']" position="attributes">
                 <attribute name="colspan">5</attribute>
+            </xpath> -->
+            <xpath expr="//header" position="attributes">
+                <attribute name="invisible">1</attribute>
             </xpath>
         </field>
     </record>
@@ -406,13 +409,13 @@
         <field name="priority">16</field>
         <field name="arch" type="xml">
             <field name="holiday_status_id" position="replace"/>
-            <div name="title" position="inside">
+            <!-- <div name="title" position="inside">
                 <h1 class="d-flex flex-row justify-content-between">
                     <field name="holiday_status_id" options="{'no_open': True}" context="{'from_manager_leave_form': True ,'employee_id': employee_id, 'default_date_from':date_from, 'default_date_to':date_to}"/>
                 </h1>
-            </div>
+            </div> -->
             <field name="employee_id" position="replace"/>
-            <label id="label_dates" position="before">
+            <!-- <label id="label_dates" position="before">
                     <field name="multi_employee" invisible="1" force_save="1"/>
                     <field name="employee_id" groups="hr_holidays.group_hr_holidays_user" attrs="{
                         'invisible': ['|', '|', ('holiday_type', '!=', 'employee'), ('state', '!=', 'validate'), ('employee_id', '=', False)]
@@ -421,11 +424,11 @@
                         'required': [('holiday_type', '=', 'employee'), ('state', 'in', ('draft', 'cancel', 'refuse'))],
                         'invisible': ['|', ('holiday_type', '!=', 'employee'), '&amp;', ('state', '=', 'validate'), ('employee_id', '!=', False)],
                         }" widget="many2many_tags"/>
-            </label>
+            </label> -->
             <field name="name" position="replace"/>
-            <field name="user_id" position="before">
+            <!-- <field name="user_id" position="before">
                 <field name="name"/>
-            </field>
+            </field> -->
             <xpath expr="//group[@name='col_right']" position="replace">
                 <group>
                     <widget name="hr_leave_stats"/>
diff --git a/addons/survey/models/survey_question.py b/addons/survey/models/survey_question.py
index 9159871264d6c..35603c26125f2 100644
--- a/addons/survey/models/survey_question.py
+++ b/addons/survey/models/survey_question.py
@@ -142,7 +142,7 @@ def default_get(self, fields):
 
     # Conditional display
     is_conditional = fields.Boolean(
-        string='Conditional Display', copy=False, help="""If checked, this question will be displayed only 
+        string='Conditional Display', copy=False, help="""If checked, this question will be displayed only
         if the specified conditional answer have been selected in a previous question""")
     triggering_question_id = fields.Many2one(
         'survey.question', string="Triggering Question", copy=False, compute="_compute_triggering_question_id",
@@ -199,16 +199,17 @@ def _compute_question_ids(self):
     def _compute_page_id(self):
         """Will find the page to which this question belongs to by looking inside the corresponding survey"""
         for question in self:
-            if question.is_page:
-                question.page_id = None
-            else:
-                page = None
-                for q in question.survey_id.question_and_page_ids.sorted():
-                    if q == question:
-                        break
-                    if q.is_page:
-                        page = q
-                question.page_id = page
+            # if question.is_page:
+            #     question.page_id = None
+            # else:
+            #     page = None
+            #     for q in question.survey_id.question_and_page_ids.sorted():
+            #         if q == question:
+            #             break
+            #         if q.is_page:
+            #             page = q
+            #     question.page_id = page
+            question.page_id = None
 
     @api.depends('question_type', 'validation_email')
     def _compute_save_as_email(self):
diff --git a/odoo/addons/base/__manifest__.py b/odoo/addons/base/__manifest__.py
index 043dd3ce18cfb..c2131ec5fbed6 100644
--- a/odoo/addons/base/__manifest__.py
+++ b/odoo/addons/base/__manifest__.py
@@ -28,7 +28,7 @@
         'views/base_menus.xml',
         'views/decimal_precision_views.xml',
         'views/res_config_views.xml',
-        'data/res.country.state.csv',
+        # 'data/res.country.state.csv',
         'views/ir_actions_views.xml',
         'views/ir_asset_views.xml',
         'views/ir_config_parameter_views.xml',
@@ -51,7 +51,7 @@
         'views/ir_qweb_widget_templates.xml',
         'views/ir_module_views.xml',
         'data/ir_module_category_data.xml',
-        'data/ir_module_module.xml',
+        # 'data/ir_module_module.xml',
         'report/ir_module_reports.xml',
         'report/ir_module_report_templates.xml',
         'wizard/base_module_update_views.xml',
diff --git a/odoo/addons/base/data/ir_module_module.xml b/odoo/addons/base/data/ir_module_module.xml
index 9cd19d695858b..13c2203e5c847 100644
--- a/odoo/addons/base/data/ir_module_module.xml
+++ b/odoo/addons/base/data/ir_module_module.xml
@@ -2,6 +2,20 @@
 <odoo>
     <data>
 
+        <record model="ir.module.category" id="base.module_category_services_timesheets">
+            <field name="name">Helps you manage the timesheets.</field>
+            <field name="description">Helps you manage the timesheets.</field>
+            <field name="sequence">13</field>
+        </record>
+
+        <record model="ir.module.category" id="base.module_category_marketing_email_marketing">
+            <field name="sequence">19</field>
+            <field name="description">Helps you manage your mass mailing to design
+    professional emails and reuse templates.</field>
+        <field name="name">Helps you manage your mass mailing to design
+    professional emails and reuse templates.</field>
+        </record>
+
         <record model="ir.module.module" id="base.module_web_studio">
             <field name="name">web_studio</field>
             <field name="shortdesc">Studio</field>
diff --git a/odoo/addons/base/models/ir_model.py b/odoo/addons/base/models/ir_model.py
index 9d00322a97123..68fd17f0e1c2f 100644
--- a/odoo/addons/base/models/ir_model.py
+++ b/odoo/addons/base/models/ir_model.py
@@ -412,37 +412,38 @@ class CustomModel(models.Model):
         return CustomModel
 
     def _add_manual_models(self):
-        """ Add extra models to the registry. """
-        # clean up registry first
-        for name, Model in list(self.pool.items()):
-            if Model._custom:
-                del self.pool.models[name]
-                # remove the model's name from its parents' _inherit_children
-                for Parent in Model.__bases__:
-                    if hasattr(Parent, 'pool'):
-                        Parent._inherit_children.discard(name)
-        # add manual models
-        cr = self.env.cr
-        cr.execute('SELECT * FROM ir_model WHERE state=%s', ['manual'])
-        for model_data in cr.dictfetchall():
-            model_class = self._instanciate(model_data)
-            Model = model_class._build_model(self.pool, cr)
-            if tools.table_kind(cr, Model._table) not in ('r', None):
-                # not a regular table, so disable schema upgrades
-                Model._auto = False
-                cr.execute(
-                    '''
-                    SELECT a.attname
-                      FROM pg_attribute a
-                      JOIN pg_class t
-                        ON a.attrelid = t.oid
-                       AND t.relname = %s
-                     WHERE a.attnum > 0 -- skip system columns
-                    ''',
-                    [Model._table]
-                )
-                columns = {colinfo[0] for colinfo in cr.fetchall()}
-                Model._log_access = set(models.LOG_ACCESS_COLUMNS) <= columns
+        # """ Add extra models to the registry. """
+        # # clean up registry first
+        # for name, Model in list(self.pool.items()):
+        #     if Model._custom:
+        #         del self.pool.models[name]
+        #         # remove the model's name from its parents' _inherit_children
+        #         for Parent in Model.__bases__:
+        #             if hasattr(Parent, 'pool'):
+        #                 Parent._inherit_children.discard(name)
+        # # add manual models
+        # cr = self.env.cr
+        # cr.execute('SELECT * FROM ir_model WHERE state=%s', ['manual'])
+        # for model_data in cr.dictfetchall():
+        #     model_class = self._instanciate(model_data)
+        #     Model = model_class._build_model(self.pool, cr)
+        #     if tools.table_kind(cr, Model._table) not in ('r', None):
+        #         # not a regular table, so disable schema upgrades
+        #         Model._auto = False
+        #         cr.execute(
+        #             '''
+        #             SELECT a.attname
+        #               FROM pg_attribute a
+        #               JOIN pg_class t
+        #                 ON a.attrelid = t.oid
+        #                AND t.relname = %s
+        #              WHERE a.attnum > 0 -- skip system columns
+        #             ''',
+        #             [Model._table]
+        #         )
+        #         columns = {colinfo[0] for colinfo in cr.fetchall()}
+        #         Model._log_access = set(models.LOG_ACCESS_COLUMNS) <= columns
+        pass
 
 
 # retrieve field types defined by the framework only (not extensions)
@@ -1164,16 +1165,17 @@ def _instanciate(self, field_data):
             return fields.Field.by_type[field_data['ttype']](**attrs)
 
     def _add_manual_fields(self, model):
-        """ Add extra fields on model. """
-        fields_data = self._get_manual_field_data(model._name)
-        for name, field_data in fields_data.items():
-            if name not in model._fields and field_data['state'] == 'manual':
-                try:
-                    field = self._instanciate(field_data)
-                    if field:
-                        model._add_field(name, field)
-                except Exception:
-                    _logger.exception("Failed to load field %s.%s: skipped", model._name, field_data['name'])
+        # """ Add extra fields on model. """
+        # fields_data = self._get_manual_field_data(model._name)
+        # for name, field_data in fields_data.items():
+        #     if name not in model._fields and field_data['state'] == 'manual':
+        #         try:
+        #             field = self._instanciate(field_data)
+        #             if field:
+        #                 model._add_field(name, field)
+        #         except Exception:
+        #             _logger.exception("Failed to load field %s.%s: skipped", model._name, field_data['name'])
+        pass
 
 
 class IrModelSelection(models.Model):
@@ -1500,7 +1502,7 @@ def _module_data_uninstall(self):
         for data in self.sorted(key='id', reverse=True):
             name = tools.ustr(data.name)
             if data.model.model in self.env:
-                table = self.env[data.model.model]._table    
+                table = self.env[data.model.model]._table
             else:
                 table = data.model.model.replace('.', '_')
             typ = data.type
diff --git a/odoo/addons/base/models/res_users.py b/odoo/addons/base/models/res_users.py
index 227b3494cb9e8..50c9812fbad65 100644
--- a/odoo/addons/base/models/res_users.py
+++ b/odoo/addons/base/models/res_users.py
@@ -463,12 +463,13 @@ def _read(self, fields):
     def _check_company(self):
         for user in self:
             if user.company_id not in user.company_ids:
-                raise ValidationError(
-                    _('Company %(company_name)s is not in the allowed companies for user %(user_name)s (%(company_allowed)s).',
-                      company_name=user.company_id.name,
-                      user_name=user.name,
-                      company_allowed=', '.join(user.mapped('company_ids.name')))
-                )
+                # raise ValidationError(
+                #     _('Company %(company_name)s is not in the allowed companies for user %(user_name)s (%(company_allowed)s).',
+                #       company_name=user.company_id.name,
+                #       user_name=user.name,
+                #       company_allowed=', '.join(user.mapped('company_ids.name')))
+                # )
+                pass
 
     @api.constrains('action_id')
     def _check_action_id(self):
diff --git a/odoo/models.py b/odoo/models.py
index c54396a55e3e6..3c7bf47e70f19 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -3511,24 +3511,24 @@ def _check_company(self, fnames=None):
                 elif not (corecord.company_id <= company):
                     inconsistencies.append((record, name, corecord))
 
-        if inconsistencies:
-            lines = [_("Incompatible companies on records:")]
-            company_msg = _("- Record is company %(company)r and %(field)r (%(fname)s: %(values)s) belongs to another company.")
-            record_msg = _("- %(record)r belongs to company %(company)r and %(field)r (%(fname)s: %(values)s) belongs to another company.")
-            for record, name, corecords in inconsistencies[:5]:
-                if record._name == 'res.company':
-                    msg, company = company_msg, record
-                else:
-                    msg, company = record_msg, record.company_id
-                field = self.env['ir.model.fields']._get(self._name, name)
-                lines.append(msg % {
-                    'record': record.display_name,
-                    'company': company.display_name,
-                    'field': field.field_description,
-                    'fname': field.name,
-                    'values': ", ".join(repr(rec.display_name) for rec in corecords),
-                })
-            raise UserError("\n".join(lines))
+        # if inconsistencies:
+        #     lines = [_("Incompatible companies on records:")]
+        #     company_msg = _("- Record is company %(company)r and %(field)r (%(fname)s: %(values)s) belongs to another company.")
+        #     record_msg = _("- %(record)r belongs to company %(company)r and %(field)r (%(fname)s: %(values)s) belongs to another company.")
+        #     for record, name, corecords in inconsistencies[:5]:
+        #         if record._name == 'res.company':
+        #             msg, company = company_msg, record
+        #         else:
+        #             msg, company = record_msg, record.company_id
+        #         field = self.env['ir.model.fields']._get(self._name, name)
+        #         lines.append(msg % {
+        #             'record': record.display_name,
+        #             'company': company.display_name,
+        #             'field': field.field_description,
+        #             'fname': field.name,
+        #             'values': ", ".join(repr(rec.display_name) for rec in corecords),
+        #         })
+        #     raise UserError("\n".join(lines))
 
     @api.model
     def check_access_rights(self, operation, raise_exception=True):
@@ -3654,8 +3654,8 @@ def unlink(self):
             for sub_ids in cr.split_for_in_conditions(self.ids):
                 # Check if the records are used as default properties.
                 refs = ['%s,%s' % (self._name, i) for i in sub_ids]
-                if Property.search([('res_id', '=', False), ('value_reference', 'in', refs)], limit=1):
-                    raise UserError(_('Unable to delete this document because it is used as a default property'))
+                # if Property.search([('res_id', '=', False), ('value_reference', 'in', refs)], limit=1):
+                #     raise UserError(_('Unable to delete this document because it is used as a default property'))
 
                 # Delete the records' properties.
                 Property.search([('res_id', 'in', refs)]).unlink()
@@ -4251,6 +4251,7 @@ def _create(self, data_list):
     def _compute_field_value(self, field):
         # This is for base automation, to have something to override to catch
         # the changes of values for stored compute fields.
+        print(field)
         if isinstance(field.compute, str):
             getattr(self, field.compute)()
         else: