[UPD] add partner tags on invoice and sale order

models/account.py

@@ -22,6 +22,11 @@ class AccountInvoice(models.Model):
         "res.partner", string="Apporteur", tracking=True, copy=False
     )
 
+    # add partner tags
+    partner_category_ids = fields.Many2many(
+        related="partner_id.category_id", string="Etiquettes du contact"
+    )
+
     # ------------------------------------------------------
     # SQL Constraints
     # ------------------------------------------------------

models/sale.py

@@ -22,6 +22,11 @@ class SaleOrder(models.Model):
         "res.partner", string="Apporteur", tracking=True, copy=False
     )
 
+    # add partner tags
+    partner_category_ids = fields.Many2many(
+        related="partner_id.category_id", string="Etiquettes du client"
+    )
+
     # ------------------------------------------------------
     # SQL Constraints
     # ------------------------------------------------------

views/account_views.xml

@@ -7,13 +7,25 @@
         <field name="model">account.move</field>
         <field name="inherit_id" ref="account.view_move_form" />
         <field name="arch" type="xml">
+            <!-- add user second id in other info -->
             <field name="invoice_user_id" position="after">
                 <field
                     name="user_second_ids"
                     options="{'no_create_edit': 1}"
                     widget="many2many_tags"
                 />
-		    <field name="user_provider_id" options="{'no_create_edit': 1}" />
+                <field
+                    name="user_provider_id"
+                    options="{'no_create_edit': 1}"
+                />
+            </field>
+            <!-- add partner tags -->
+            <field name="partner_id" position="after">
+                <field
+                    name="partner_category_ids"
+                    widget="many2many_tags"
+                    options="{'color_field': 'color'}"
+                />
             </field>
         </field>
     </record>

views/sale_views.xml

@@ -33,4 +33,19 @@
             </field>
         </field>
     </record>
+    <record id="sale_order_3ad_form" model="ir.ui.view">
+        <field name="name">sale.order.3a.form</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+            <!-- add partner tags -->
+            <field name="partner_id" position="after">
+                <field
+                    name="partner_category_ids"
+                    widget="many2many_tags"
+                    options="{'color_field': 'color'}"
+                />
+            </field>
+        </field>
+    </record>
 </odoo>