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app/admin/controller/Sale.php

@@ -661,7 +661,7 @@ class Sale extends Base
                             GoodLog::LogAdd($this->post['token'],$good_data,"CKD");
                             $status=1;
                         }else{
-                            if ($temp == false) {
+                            if ($temp == false || ($temp['usable_stock'] - $num) < 0) {
                                     $status=0;
                             }else{
                                 if (($temp['usable_stock'] - $num) < 0) {