diff --git a/models/catalog-items-api-model/catalogItemsV0.json b/models/catalog-items-api-model/catalogItemsV0.json
index d3b3dec..7408a12 100644
--- a/models/catalog-items-api-model/catalogItemsV0.json
+++ b/models/catalog-items-api-model/catalogItemsV0.json
@@ -29,7 +29,7 @@
         "tags": [
           "catalog"
         ],
-        "description": "Returns a list of items and their attributes, based on a search query or item identifiers that you specify. When based on a search query, provide the Query parameter and optionally, the QueryContextId parameter. When based on item identifiers, provide a single appropriate parameter based on the identifier type, and specify the associated item value. MarketplaceId is always required.\n\n**Usage Plan:**\n\n| Rate (requests per second) | Burst |\n| ---- | ---- |\n| 1 | 1 |\n\nFor more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
+        "description": "Returns a list of items and their attributes, based on a search query or item identifiers that you specify. When based on a search query, provide the Query parameter and optionally, the QueryContextId parameter. When based on item identifiers, provide a single appropriate parameter based on the identifier type, and specify the associated item value. MarketplaceId is always required.\n\n**Usage Plans:**\n\n| Plan type | Rate (requests per second) | Burst |\n| ---- | ---- | ---- |\n|Default| 6 | 40 |\n|Selling partner specific| Variable | Variable |\n\nThe x-amzn-RateLimit-Limit response header returns the usage plan rate limits that were applied to the requested operation. Rate limits for some selling partners will vary from the default rate and burst shown in the table above. For more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
         "operationId": "listCatalogItems",
         "parameters": [
           {
@@ -96,6 +96,10 @@
               "$ref": "#/definitions/ListCatalogItemsResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -324,6 +328,10 @@
               "$ref": "#/definitions/ListCatalogItemsResponse"
             },
             "headers": {
+             "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -379,6 +387,10 @@
               "$ref": "#/definitions/ListCatalogItemsResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -430,7 +442,7 @@
         "tags": [
           "catalog"
         ],
-        "description": "Returns a specified item and its attributes.\n\n**Usage Plan:**\n\n| Rate (requests per second) | Burst |\n| ---- | ---- |\n| 1 | 1 |\n\nFor more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
+        "description": "Returns a specified item and its attributes.\n\n**Usage Plans:**\n\n| Plan type | Rate (requests per second) | Burst |\n| ---- | ---- | ---- |\n|Default| 2 | 20 |\n|Selling partner specific| Variable | Variable |\n\nThe x-amzn-RateLimit-Limit response header returns the usage plan rate limits that were applied to the requested operation. Rate limits for some selling partners will vary from the default rate and burst shown in the table above. For more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
         "operationId": "getCatalogItem",
         "parameters": [
           {
@@ -455,6 +467,10 @@
               "$ref": "#/definitions/GetCatalogItemResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -636,6 +652,10 @@
               "$ref": "#/definitions/GetCatalogItemResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -691,6 +711,10 @@
               "$ref": "#/definitions/GetCatalogItemResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -742,7 +766,7 @@
         "tags": [
           "catalog"
         ],
-        "description": "Returns the parent categories to which an item belongs, based on the specified ASIN or SellerSKU.\n\n**Usage Plan:**\n\n| Rate (requests per second) | Burst |\n| ---- | ---- |\n| 1 | 1 |\n\nFor more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
+        "description": "Returns the parent categories to which an item belongs, based on the specified ASIN or SellerSKU.\n\n**Usage Plans:**\n\n| Plan type | Rate (requests per second) | Burst |\n| ---- | ---- | ---- |\n|Default| 1 | 40 |\n|Selling partner specific| Variable | Variable |\n\nThe x-amzn-RateLimit-Limit response header returns the usage plan rate limits that were applied to the requested operation. Rate limits for some selling partners will vary from the default rate and burst shown in the table above. For more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
         "operationId": "listCatalogCategories",
         "parameters": [
           {
@@ -774,6 +798,10 @@
               "$ref": "#/definitions/ListCatalogCategoriesResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -814,6 +842,10 @@
               "$ref": "#/definitions/ListCatalogCategoriesResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -872,6 +904,10 @@
               "$ref": "#/definitions/ListCatalogCategoriesResponse"
             },
             "headers": {
+              "x-amzn-RateLimit-Limit": {
+                "description": "Your rate limit (requests per second) for this operation.",
+                "type": "string"
+              },
               "x-amzn-RequestId": {
                 "type": "string",
                 "description": "Unique request reference ID."
@@ -1767,11 +1803,11 @@
           "type": "string"
         },
         "ShippingTime": {
-          "description": "(0-2 days, 3-7 days, 8-13 days, or 14 or more days) – Indicates the maximum time within which the item will likely be shipped once an order has been placed.",
+          "description": "(0-2 days, 3-7 days, 8-13 days, or 14 or more days) – Indicates the maximum time within which the item will likely be shipped once an order has been placed.",
           "$ref": "#/definitions/ShippingTimeType"
         },
         "SellerPositiveFeedbackRating": {
-          "description": "(98-100%, 95-97%, 90-94%, 80-89%, 70-79%, Less than 70%, or Just launched ) – Indicates the percentage of feedback ratings that were positive over the past 12 months.",
+          "description": "(98-100%, 95-97%, 90-94%, 80-89%, 70-79%, Less than 70%, or Just launched ) – Indicates the percentage of feedback ratings that were positive over the past 12 months.",
           "type": "string"
         }
       }
@@ -1780,7 +1816,7 @@
       "type": "object",
       "properties": {
         "Max": {
-          "description": "(0-2 days, 3-7 days, 8-13 days, or 14 or more days) – Indicates the maximum time within which the item will likely be shipped once an order has been placed.",
+          "description": "(0-2 days, 3-7 days, 8-13 days, or 14 or more days) – Indicates the maximum time within which the item will likely be shipped once an order has been placed.",
           "type" : "string"
         }
       }