diff --git a/tailbone/views/purchasing/ordering.py b/tailbone/views/purchasing/ordering.py
index 32db947a..fb1a6a4f 100644
--- a/tailbone/views/purchasing/ordering.py
+++ b/tailbone/views/purchasing/ordering.py
@@ -202,11 +202,15 @@ class OrderingBatchView(PurchasingBatchView):
         if not cases_ordered or not cases_ordered.isdigit():
             return {'error': "Invalid value for cases ordered: {}".format(cases_ordered)}
         cases_ordered = int(cases_ordered)
+        if cases_ordered >= 100000: # TODO: really this depends on underlying column
+            return {'error': "Invalid value for cases ordered: {}".format(cases_ordered)}
 
         units_ordered = self.request.POST.get('units_ordered', '0')
         if not units_ordered or not units_ordered.isdigit():
             return {'error': "Invalid value for units ordered: {}".format(units_ordered)}
         units_ordered = int(units_ordered)
+        if units_ordered >= 100000: # TODO: really this depends on underlying column
+            return {'error': "Invalid value for units ordered: {}".format(units_ordered)}
 
         uuid = self.request.POST.get('product_uuid')
         product = self.Session.query(model.Product).get(uuid) if uuid else None