diff --git a/models/sub_distributors.json b/models/sub_distributors.json
index ae17091..5921aad 100644
--- a/models/sub_distributors.json
+++ b/models/sub_distributors.json
@@ -129,14 +129,6 @@
         "resellerid"
       ]
     },
-    {
-      "name": "idx_sd_code",
-      "idxtype": "unique",
-      "idxfields": [
-        "resellerid",
-        "sub_dist_code"
-      ]
-    },
     {
       "name": "idx_sd_manager",
       "idxtype": "index",