diff --git a/openupgrade_scripts/scripts/event/16.0.1.7/post-migration.py b/openupgrade_scripts/scripts/event/16.0.1.7/post-migration.py
new file mode 100644
index 000000000000..e407bc6a1d8b
--- /dev/null
+++ b/openupgrade_scripts/scripts/event/16.0.1.7/post-migration.py
@@ -0,0 +1,20 @@
+# Copyright 2023 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from openupgradelib import openupgrade
+
+_column_drops = [
+    ("event_event", "seats_available"),
+    ("event_event", "seats_reserved"),
+    ("event_event", "seats_unconfirmed"),
+    ("event_event", "seats_used"),
+    ("event_event_ticket", "seats_available"),
+    ("event_event_ticket", "seats_reserved"),
+    ("event_event_ticket", "seats_unconfirmed"),
+    ("event_event_ticket", "seats_used"),
+]
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    openupgrade.drop_columns(env.cr, _column_drops)
diff --git a/openupgrade_scripts/scripts/event/16.0.1.7/upgrade_analysis_work.txt b/openupgrade_scripts/scripts/event/16.0.1.7/upgrade_analysis_work.txt
new file mode 100644
index 000000000000..b8583e0af752
--- /dev/null
+++ b/openupgrade_scripts/scripts/event/16.0.1.7/upgrade_analysis_work.txt
@@ -0,0 +1,36 @@
+---Models in module 'event'---
+---Fields in module 'event'---
+event        / event.event              / seats_available (integer)     : not stored anymore
+event        / event.event              / seats_reserved (integer)      : not stored anymore
+event        / event.event              / seats_unconfirmed (integer)   : not stored anymore
+event        / event.event              / seats_used (integer)          : not stored anymore
+event        / event.event.ticket       / seats_available (integer)     : not stored anymore
+event        / event.event.ticket       / seats_reserved (integer)      : not stored anymore
+event        / event.event.ticket       / seats_unconfirmed (integer)   : not stored anymore
+event        / event.event.ticket       / seats_used (integer)          : not stored anymore
+# Post-migration: remove the columns in event_event and event_event_ticket tables as fields were and are still readonly
+
+event        / event.registration       / date_open (datetime)          : DEL
+# NOTHING TO DO: obsolete feature
+
+event        / event.tag                / _order                        : _order is now 'category_sequence, sequence, id' ('sequence')
+# NOTHING TO DO
+
+event        / event.tag                / category_sequence (integer)   : NEW isrelated: related, stored
+# NOTHING TO DO: new field
+
+---XML records in module 'event'---
+NEW ir.actions.act_window: event.event_registration_action_kanban
+NEW ir.actions.act_window: event.event_registration_action_stats_from_event
+# NOTHING TO DO
+
+DEL ir.actions.act_window: event.event_event_action_pivot
+DEL ir.ui.menu: event.event_event_menu_pivot_report
+# NOTHING TO DO: deleted by the ORM
+
+NEW ir.ui.view: event.event_registration_view_search_event_specific
+# NOTHING TO DO
+
+DEL ir.ui.view: event.event_event_view_graph
+DEL ir.ui.view: event.event_event_view_pivot
+# NOTHING TO DO: deleted by the ORM