diff --git a/v1-dev/security.json b/v1-dev/security.json
index bd0c92ce..8a67d47f 100644
--- a/v1-dev/security.json
+++ b/v1-dev/security.json
@@ -611,10 +611,6 @@
         "subordinated_unsecured"
       ]
     },
-    "settlement_days": {
-      "description": "The market standard settlement period of the security.",
-      "type": "number"
-    },
     "sft_type": {
       "description": "The sft_type parameter defines the transaction mechanism conducted for the SFT for this security product.",
       "type": "string",