diff --git a/cor_custom/models/analytic.py b/cor_custom/models/analytic.py
index a142200..dc79a27 100755
--- a/cor_custom/models/analytic.py
+++ b/cor_custom/models/analytic.py
@@ -17,7 +17,7 @@ class AccountAnalyticLine(models.Model):
     start_time = fields.Float(string='Start Time', digits=(16, 2))
     end_time = fields.Float(string='End Time', digits=(16, 2))
     unit_amount = fields.Float('Duration', default=0.0)
-    parent_project = fields.Many2one('project.project', string='Parent Project')
+    parent_project = fields.Many2one('project.project', related='project_id.parent_project', string='Parent Project')
 
 
     def _default_start_datetime(self):
@@ -30,16 +30,16 @@ class AccountAnalyticLine(models.Model):
     end_datetime = fields.Datetime("End Time", required=True)
 
 
-    @api.onchange('project_id')
-    def _onchange_parent_project_id(self):
-        if self.project_id:
-            parent_project = self.env['project.project'].search([('sub_project', '=', self.project_id.id)], limit=1)
-            if parent_project:
-                self.parent_project = parent_project.id
-            else:
-                self.parent_project = False
-        else:
-            self.parent_project = False
+    # @api.onchange('project_id')
+    # def _onchange_parent_project_id(self):
+    #     if self.project_id:
+    #         parent_project = self.env['project.project'].search([('sub_project', '=', self.project_id.id)], limit=1)
+    #         if parent_project:
+    #             self.parent_project = parent_project.id
+    #         else:
+    #             self.parent_project = False
+    #     else:
+    #         self.parent_project = False
 
 
     @api.onchange('employee_id')
diff --git a/cor_custom/views/analytic_view.xml b/cor_custom/views/analytic_view.xml
index c6c60c7..0bf90cd 100755
--- a/cor_custom/views/analytic_view.xml
+++ b/cor_custom/views/analytic_view.xml
@@ -79,7 +79,7 @@
                 <field name="end_datetime" string="End Time"/><!--custom-->
                 <field name="unit_amount" optional="show" widget="timesheet_uom" sum="Total"
                        decoration-danger="unit_amount &gt; 24"/>
-                <field name="parent_project"/><!--custom-->
+                <field name="parent_project" options="{'no_open': True, 'no_create': True, 'no_create_edit': True}"/><!--custom-->
                 <field name="company_id" invisible="1"/>
                 <field name="user_id" invisible="1"/>
             </tree>
diff --git a/sub_project/models/sub_project.py b/sub_project/models/sub_project.py
index 19964f4..6e3e72f 100755
--- a/sub_project/models/sub_project.py
+++ b/sub_project/models/sub_project.py
@@ -8,7 +8,7 @@ class SubProject(models.Model):
     is_sub_project = fields.Boolean("Is Sub Project")
     sub_project = fields.Many2many('project.project', 'project_subproject_rel', 'project_id', 'id',
                                    domain="[('is_sub_project', '=', True)]", string='Sub Project')
-    parent_project = fields.Many2one('project.project', string='Parent Project')
+    parent_project = fields.Many2one('project.project', domain="[('is_sub_project', '=', False)]", string='Parent Project')
 
     @api.depends('sub_project')
     def onchange_parent_project_sub_project(self):
diff --git a/sub_project/views/sub_project.xml b/sub_project/views/sub_project.xml
index aa352ca..5f8b66a 100755
--- a/sub_project/views/sub_project.xml
+++ b/sub_project/views/sub_project.xml
@@ -9,10 +9,10 @@
             <field name="arch" type="xml">
                 <data>
                     <xpath expr="//field[@name='privacy_visibility']" position="after">
-                        <field name="is_sub_project"/>
+                        <field name="is_sub_project" invisible="1"/>
                     </xpath>
                     <xpath expr="//field[@name='privacy_visibility']" position="after">
-                        <field name="parent_project" attrs="{'invisible': [('is_sub_project', '=', False)]}"/>
+                        <field name="parent_project" attrs="{'invisible': [('is_sub_project', '=', False)], 'required': [('is_sub_project', '=', True)]}"/>
                     </xpath>
                     <xpath expr="//page[@name='settings']" position="after">
                         <page name="sub_project" string="Sub Project"