diff --git a/smithy-aws-protocol-tests/model/restJson1/validation/malformed-uniqueItems.smithy b/smithy-aws-protocol-tests/model/restJson1/validation/malformed-uniqueItems.smithy
index c418a82c2dd..083717c2b1f 100644
--- a/smithy-aws-protocol-tests/model/restJson1/validation/malformed-uniqueItems.smithy
+++ b/smithy-aws-protocol-tests/model/restJson1/validation/malformed-uniqueItems.smithy
@@ -53,8 +53,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/blobList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/blobList' failed to satisfy constraint: Member must have unique values", "path": "/blobList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/blobList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/blobList' failed to satisfy constraint: Member must have unique values", "path": "/blobList"}]}"""
                 }
             }
         }
@@ -83,8 +83,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/booleanList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/booleanList' failed to satisfy constraint: Member must have unique values", "path": "/booleanList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/booleanList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/booleanList' failed to satisfy constraint: Member must have unique values", "path": "/booleanList"}]}"""
                 }
             }
         },
@@ -117,8 +117,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/stringList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/stringList' failed to satisfy constraint: Member must have unique values", "path": "/stringList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/stringList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/stringList' failed to satisfy constraint: Member must have unique values", "path": "/stringList"}]}"""
                 }
             }
         }
@@ -147,8 +147,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/byteList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/byteList' failed to satisfy constraint: Member must have unique values", "path": "/byteList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/byteList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/byteList' failed to satisfy constraint: Member must have unique values", "path": "/byteList"}]}"""
                 }
             }
         }
@@ -177,8 +177,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/shortList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/shortList' failed to satisfy constraint: Member must have unique values", "path": "/shortList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/shortList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/shortList' failed to satisfy constraint: Member must have unique values", "path": "/shortList"}]}"""
                 }
             }
         }
@@ -207,8 +207,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/integerList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/integerList' failed to satisfy constraint: Member must have unique values", "path": "/integerList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/integerList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/integerList' failed to satisfy constraint: Member must have unique values", "path": "/integerList"}]}"""
                 }
             }
         }
@@ -237,8 +237,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/longList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/longList' failed to satisfy constraint: Member must have unique values", "path": "/longList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/longList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/longList' failed to satisfy constraint: Member must have unique values", "path": "/longList"}]}"""
                 }
             }
         }
@@ -267,8 +267,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/timestampList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/timestampList' failed to satisfy constraint: Member must have unique values", "path": "/timestampList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/timestampList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/timestampList' failed to satisfy constraint: Member must have unique values", "path": "/timestampList"}]}"""
                 }
             }
         }
@@ -297,8 +297,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/dateTimeList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/dateTimeList' failed to satisfy constraint: Member must have unique values", "path": "/dateTimeList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/dateTimeList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/dateTimeList' failed to satisfy constraint: Member must have unique values", "path": "/dateTimeList"}]}"""
                 }
             }
         }
@@ -327,8 +327,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/httpDateList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/httpDateList' failed to satisfy constraint: Member must have unique values", "path": "/httpDateList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/httpDateList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/httpDateList' failed to satisfy constraint: Member must have unique values", "path": "/httpDateList"}]}"""
                 }
             }
         },
@@ -360,8 +360,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/enumList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/enumList' failed to satisfy constraint: Member must have unique values", "path": "/enumList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/enumList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/enumList' failed to satisfy constraint: Member must have unique values", "path": "/enumList"}]}"""
                 }
             }
         }
@@ -390,8 +390,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/intEnumList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/intEnumList' failed to satisfy constraint: Member must have unique values", "path": "/intEnumList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/intEnumList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/intEnumList' failed to satisfy constraint: Member must have unique values", "path": "/intEnumList"}]}"""
                 }
             }
         }
@@ -420,8 +420,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/listList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/listList' failed to satisfy constraint: Member must have unique values", "path": "/listList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/listList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/listList' failed to satisfy constraint: Member must have unique values", "path": "/listList"}]}"""
                 }
             }
         }
@@ -450,8 +450,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/structureList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/structureList' failed to satisfy constraint: Member must have unique values", "path": "/structureList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/structureList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/structureList' failed to satisfy constraint: Member must have unique values", "path": "/structureList"}]}"""
                 }
             }
         }
@@ -480,8 +480,8 @@ apply MalformedUniqueItems @httpMalformedRequestTests([
                 mediaType: "application/json",
                 assertion: {
                     contents: """
-                    { "message" : "1 validation error detected. Value with repeated values at '/unionList' failed to satisfy constraint: Member must have unique values",
-                      "fieldList" : [{"message": "Value with repeated values at '/unionList' failed to satisfy constraint: Member must have unique values", "path": "/unionList"}]}"""
+                    { "message" : "1 validation error detected. Value at '/unionList' failed to satisfy constraint: Member must have unique values",
+                      "fieldList" : [{"message": "Value at '/unionList' failed to satisfy constraint: Member must have unique values", "path": "/unionList"}]}"""
                 }
             }
         },