diff --git a/easy_my_coop_api/__manifest__.py b/easy_my_coop_api/__manifest__.py
index 7aa896a..ac55137 100644
--- a/easy_my_coop_api/__manifest__.py
+++ b/easy_my_coop_api/__manifest__.py
@@ -17,7 +17,7 @@
     "summary": """
         Open Easy My Coop to the world: RESTful API.
     """,
-    "data": [],
+    "data": ["views/external_id_mixin_views.xml"],
     "demo": ["demo/demo.xml"],
     "installable": True,
     "application": False,
diff --git a/easy_my_coop_api/models/external_id_mixin.py b/easy_my_coop_api/models/external_id_mixin.py
index bed33e3..8206b1f 100644
--- a/easy_my_coop_api/models/external_id_mixin.py
+++ b/easy_my_coop_api/models/external_id_mixin.py
@@ -35,6 +35,11 @@ class ExternalIdMixin(models.AbstractModel):
         string="Last API Export Date", required=False
     )
 
+    # only used to display and hide "Generate external ID" button
+    external_id_generated = fields.Boolean(
+        string="External ID Generated", default=False, required=False
+    )
+
     @api.multi
     def set_external_sequence(self):
         self.ensure_one()
@@ -61,7 +66,12 @@ class ExternalIdMixin(models.AbstractModel):
             while True:
                 try:
                     next_id = self.external_id_sequence_id._next()
-                    self.sudo().write({"_api_external_id": next_id})
+                    self.sudo().write(
+                        {
+                            "_api_external_id": next_id,
+                            "external_id_generated": True,
+                        }
+                    )
                     break
                 except IntegrityError as e:
                     if n > 0:
diff --git a/easy_my_coop_api/views/external_id_mixin_views.xml b/easy_my_coop_api/views/external_id_mixin_views.xml
new file mode 100644
index 0000000..4a8cc8b
--- /dev/null
+++ b/easy_my_coop_api/views/external_id_mixin_views.xml
@@ -0,0 +1,178 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright 2020 Coop IT Easy
+     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+-->
+<odoo>
+    <record id="view_partner_form" model="ir.ui.view">
+        <field name="name">view_partner_form</field>
+        <field name="model">res.partner</field>
+        <field name="inherit_id" ref="base.view_partner_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//page[@name='sales_purchases']" position="after">
+                <page name="api_page" string="API">
+                    <group>
+                        <field name="external_id_generated" invisible="1"/>
+                        <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <button name="get_api_external_id"
+                                string="Generate external ID"
+                                type="object"
+                                class="oe_highlight"
+                                attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                        />
+                    </group>
+                </page>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="view_account_form" model="ir.ui.view">
+        <field name="name">view_account_form</field>
+        <field name="model">account.account</field>
+        <field name="inherit_id" ref="account.view_account_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='code']/../.." position="after">
+                <notebook>
+                    <page name="api_page" string="API">
+                        <group>
+                            <field name="external_id_generated" invisible="1"/>
+                            <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                            <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                            <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                            <button name="get_api_external_id"
+                                    string="Generate external ID"
+                                    type="object"
+                                    class="oe_highlight"
+                                    attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                            />
+                        </group>
+                    </page>
+                </notebook>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="view_account_journal_form" model="ir.ui.view">
+        <field name="name">view_account_journal_form</field>
+        <field name="model">account.journal</field>
+        <field name="inherit_id" ref="account.view_account_journal_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//page[@name='advanced_settings']" position="after">
+                <page name="api_page" string="API">
+                    <group>
+                        <field name="external_id_generated" invisible="1"/>
+                        <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <button name="get_api_external_id"
+                                string="Generate external ID"
+                                type="object"
+                                class="oe_highlight"
+                                attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                        />
+                    </group>
+                </page>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="invoice_form" model="ir.ui.view">
+        <field name="name">invoice_form</field>
+        <field name="model">account.invoice</field>
+        <field name="inherit_id" ref="account.invoice_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//page[@name='other_info']" position="after">
+                <page name="api_page" string="API">
+                    <group>
+                        <field name="external_id_generated" invisible="1"/>
+                        <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <button name="get_api_external_id"
+                                string="Generate external ID"
+                                type="object"
+                                class="oe_highlight"
+                                attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                        />
+                    </group>
+                </page>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="view_account_payment_form" model="ir.ui.view">
+        <field name="name">view_account_payment_form</field>
+        <field name="model">account.payment</field>
+        <field name="inherit_id" ref="account.view_account_payment_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='communication']/../.." position="after">
+                <notebook>
+                    <page name="api_page" string="API">
+                        <group>
+                            <field name="external_id_generated" invisible="1"/>
+                            <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                            <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                            <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                            <button name="get_api_external_id"
+                                    string="Generate external ID"
+                                    type="object"
+                                    class="oe_highlight"
+                                    attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                            />
+                        </group>
+                    </page>
+                </notebook>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="product_template_form_view" model="ir.ui.view">
+        <field name="name">product_template_form_view</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="product.product_template_form_view"/>
+        <field name="arch" type="xml">
+            <xpath expr="//page[@name='inventory']" position="after">
+                <page name="api_page" string="API">
+                    <group>
+                        <field name="external_id_generated" invisible="1"/>
+                        <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <button name="get_api_external_id"
+                                string="Generate external ID"
+                                type="object"
+                                class="oe_highlight"
+                                attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                        />
+                    </group>
+                </page>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="subscription_request_form" model="ir.ui.view">
+        <field name="name">subscription_request_form</field>
+        <field name="model">subscription.request</field>
+        <field name="inherit_id" ref="easy_my_coop.subscription_request_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//page[@name='capital_release_request']" position="after">
+                <page name="api_page" string="API">
+                    <group>
+                        <field name="external_id_generated" invisible="1"/>
+                        <field name="_api_external_id" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="first_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <field name="last_api_export_date" attrs="{'invisible': [('external_id_generated', '=', False)]}"/>
+                        <button name="get_api_external_id"
+                                string="Generate external ID"
+                                type="object"
+                                class="oe_highlight"
+                                attrs="{'invisible': [('external_id_generated', '=', True)]}"
+                        />
+                    </group>
+                </page>
+            </xpath>
+        </field>
+    </record>
+</odoo>