diff --git a/erpnext/patches/v10_0/set_qty_in_transactions_based_on_serial_no_input.py b/erpnext/patches/v10_0/set_qty_in_transactions_based_on_serial_no_input.py
index 5dbcb1d..083b7f4 100644
--- a/erpnext/patches/v10_0/set_qty_in_transactions_based_on_serial_no_input.py
+++ b/erpnext/patches/v10_0/set_qty_in_transactions_based_on_serial_no_input.py
@@ -9,4 +9,13 @@
 
 	ss = frappe.get_doc("Stock Settings")
 	ss.set_qty_in_transactions_based_on_serial_no_input = 1
+
+	if ss.default_warehouse \
+		and not frappe.db.exists("Warehouse", ss.default_warehouse):
+			ss.default_warehouse = None
+
+	if ss.stock_uom and not frappe.db.exists("UOM", ss.stock_uom):
+		ss.stock_uom = None
+
+	ss.flags.ignore_mandatory = True
 	ss.save()
\ No newline at end of file