diff --git a/models/vendor-direct-fulfillment-inventory-api-model/vendorDirectFulfillmentInventoryV1.json b/models/vendor-direct-fulfillment-inventory-api-model/vendorDirectFulfillmentInventoryV1.json
index e5482a1..f7786d8 100644
--- a/models/vendor-direct-fulfillment-inventory-api-model/vendorDirectFulfillmentInventoryV1.json
+++ b/models/vendor-direct-fulfillment-inventory-api-model/vendorDirectFulfillmentInventoryV1.json
@@ -64,17 +64,18 @@
                 "description": "Unique request reference identifier."
               }
             },
-            "x-amazon-spds-sandbox-behaviors": [
-              {
-                "request": {
-                  "parameters": {
-                    "body": {
-                      "value": {
-                        "inventory": {
-                          "sellingParty": {
-                            "partyId": "VENDORID"
-                          },
-                          "isFullUpdate": false,
+            "x-amzn-api-sandbox": {
+              "static": [
+                {
+                  "request": {
+                    "parameters": {
+                      "body": {
+                        "value": {
+                          "inventory": {
+                            "sellingParty": {
+                              "partyId": "VENDORID"
+                            },
+                            "isFullUpdate": false,
                           "items": [
                             {
                               "buyerProductIdentifier": "ABCD4562",
@@ -127,7 +128,8 @@
                   }
                 }
               }
-            ]
+              ]
+            }
           },
           "400": {
             "description": "Request has missing or invalid parameters and cannot be parsed.",
@@ -144,26 +146,28 @@
                 "description": "Unique request reference identifier."
               }
             },
-            "x-amazon-spds-sandbox-behaviors": [
-              {
-                "request": {
-                  "parameters": {
-                    "warehouseId": {
-                      "value": "DUMMYCODE"
+            "x-amzn-api-sandbox": {
+              "static": [
+                {
+                  "request": {
+                    "parameters": {
+                      "warehouseId": {
+                        "value": "DUMMYCODE"
+                      }
                     }
+                  },
+                  "response": {
+                    "errors": [
+                      {
+                        "code": "InvalidInput",
+                        "message": "Invalid transmission ID.",
+                        "details": ""
+                      }
+                    ]
                   }
-                },
-                "response": {
-                  "errors": [
-                    {
-                      "code": "InvalidInput",
-                      "message": "Invalid transmission ID.",
-                      "details": ""
-                    }
-                  ]
                 }
-              }
-            ]
+              ]
+            }
           },
           "403": {
             "description": "Indicates that access to the resource is forbidden. Possible reasons include Access Denied, Unauthorized, Expired Token, or Invalid Signature.",
@@ -183,6 +187,10 @@
               "$ref": "#/definitions/SubmitInventoryUpdateResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "type": "string",
+                "description": "Your rate limit (requests per second) for this operation."
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference identifier."
@@ -197,7 +205,7 @@
             "headers": {
               "x-amzn-RateLimit-Limit": {
                 "type": "string",
-                "description": "Your rate limit (requests per second) for this operation."
+                "description": "Your rate limit (requests per second) for this operation.\n_Note:_ For this status code, the rate limit header is deprecated and no longer returned."
               },
               "x-amzn-RequestId": {
                 "type": "string",
@@ -213,7 +221,7 @@
             "headers": {
               "x-amzn-RateLimit-Limit": {
                 "type": "string",
-                "description": "Your rate limit (requests per second) for this operation."
+                "description": "Your rate limit (requests per second) for this operation.\n_Note:_ For this status code, the rate limit header is deprecated and no longer returned."
               },
               "x-amzn-RequestId": {
                 "type": "string",
@@ -229,7 +237,7 @@
             "headers": {
               "x-amzn-RateLimit-Limit": {
                 "type": "string",
-                "description": "Your rate limit (requests per second) for this operation."
+                "description": "Your rate limit (requests per second) for this operation.\n_Note:_ For this status code, the rate limit header is deprecated and no longer returned."
               },
               "x-amzn-RequestId": {
                 "type": "string",
@@ -245,7 +253,7 @@
             "headers": {
               "x-amzn-RateLimit-Limit": {
                 "type": "string",
-                "description": "Your rate limit (requests per second) for this operation."
+                "description": "Your rate limit (requests per second) for this operation.\n_Note:_ For this status code, the rate limit header is deprecated and no longer returned."
               },
               "x-amzn-RequestId": {
                 "type": "string",
@@ -261,7 +269,7 @@
             "headers": {
               "x-amzn-RateLimit-Limit": {
                 "type": "string",
-                "description": "Your rate limit (requests per second) for this operation."
+                "description": "Your rate limit (requests per second) for this operation.\n_Note:_ For this status code, the rate limit header is deprecated and no longer returned."
               },
               "x-amzn-RequestId": {
                 "type": "string",