diff --git a/erpnext/patches/v8_9/set_default_customer_group.py b/erpnext/patches/v8_9/set_default_customer_group.py
index b121998..e6351c4 100644
--- a/erpnext/patches/v8_9/set_default_customer_group.py
+++ b/erpnext/patches/v8_9/set_default_customer_group.py
@@ -3,4 +3,5 @@
 def execute():
 	selling_settings = frappe.get_single('Selling Settings')
 	selling_settings.set_default_customer_group_and_territory()
+	selling_settings.flags.ignore_mandatory = True
 	selling_settings.save()