warehouse mandatory in sales invoice if update_stock
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index a2bf78c..676a468 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -59,6 +59,7 @@
 
 		if cint(self.update_stock):
 			self.validate_item_code()
+			self.validate_warehouse()
 			self.update_current_stock()
 			self.validate_delivery_note()
 
@@ -350,6 +351,11 @@
 			if not d.item_code:
 				msgprint(_("Item Code required at Row No {0}").format(d.idx), raise_exception=True)
 
+	def validate_warehouse(self):
+		for d in self.get('entries'):
+			if not d.warehouse:
+				frappe.throw(_("Warehouse required at Row No {0}").format(d.idx))
+
 	def validate_delivery_note(self):
 		for d in self.get("entries"):
 			if d.delivery_note: