diff --git a/codegen/sdk-codegen/aws-models/groundstation.2019-05-23.json b/codegen/sdk-codegen/aws-models/groundstation.2019-05-23.json
index 992db372935fa..0335da3032658 100644
--- a/codegen/sdk-codegen/aws-models/groundstation.2019-05-23.json
+++ b/codegen/sdk-codegen/aws-models/groundstation.2019-05-23.json
@@ -1920,7 +1920,7 @@
           "cloudTrailEventSource": "REPLACE_WITH_EVENT_SOURCE"
         },
         "aws.auth#sigv4": {
-          "name": ""
+          "name": "groundstation"
         },
         "aws.protocols#restJson1": {},
         "smithy.api#documentation": "<p>Welcome to the AWS Ground Station API Reference. AWS Ground Station is a fully managed service that\n      enables you to control satellite communications, downlink and process satellite data, and\n      scale your satellite operations efficiently and cost-effectively without having\n      to build or manage your own ground station infrastructure.</p>",
diff --git a/codegen/sdk-codegen/aws-models/redshift-data.2019-12-20.json b/codegen/sdk-codegen/aws-models/redshift-data.2019-12-20.json
index f74b94d0c5dc4..345c34caedbd4 100644
--- a/codegen/sdk-codegen/aws-models/redshift-data.2019-12-20.json
+++ b/codegen/sdk-codegen/aws-models/redshift-data.2019-12-20.json
@@ -1,13 +1,6 @@
 {
   "smithy": "1.0",
   "shapes": {
-    "aws.api#ArnNamespace": {
-      "type": "string",
-      "traits": {
-        "smithy.api#pattern": "^[a-z0-9.\\-]{1,63}$",
-        "smithy.api#private": {}
-      }
-    },
     "com.amazonaws.redshiftdata#Blob": {
       "type": "blob"
     },
@@ -72,13 +65,6 @@
         }
       }
     },
-    "aws.api#CloudFormationName": {
-      "type": "string",
-      "traits": {
-        "smithy.api#pattern": "^[A-Z][A-Za-z0-9]+$",
-        "smithy.api#private": {}
-      }
-    },
     "com.amazonaws.redshiftdata#ColumnList": {
       "type": "list",
       "member": {
@@ -1263,15 +1249,6 @@
     "com.amazonaws.redshiftdata#String": {
       "type": "string"
     },
-    "aws.protocols#StringList": {
-      "type": "list",
-      "member": {
-        "target": "smithy.api#String"
-      },
-      "traits": {
-        "smithy.api#private": {}
-      }
-    },
     "com.amazonaws.redshiftdata#TableList": {
       "type": "list",
       "member": {
@@ -1323,77 +1300,8 @@
         "smithy.api#httpError": 400
       }
     },
-    "aws.protocols#awsJson1_1": {
-      "type": "structure",
-      "members": {
-        "http": {
-          "target": "aws.protocols#StringList"
-        },
-        "eventStreamHttp": {
-          "target": "aws.protocols#StringList"
-        }
-      },
-      "traits": {
-        "smithy.api#documentation": "An RPC-based protocol that sends JSON payloads. This protocol does not use HTTP binding traits.",
-        "smithy.api#protocolDefinition": {
-          "traits": ["smithy.api#jsonName"]
-        },
-        "smithy.api#trait": {
-          "selector": "service"
-        }
-      }
-    },
     "com.amazonaws.redshiftdata#bool": {
       "type": "boolean"
-    },
-    "aws.api#service": {
-      "type": "structure",
-      "members": {
-        "sdkId": {
-          "target": "smithy.api#String",
-          "traits": {
-            "smithy.api#required": {}
-          }
-        },
-        "arnNamespace": {
-          "target": "aws.api#ArnNamespace"
-        },
-        "cloudFormationName": {
-          "target": "aws.api#CloudFormationName"
-        },
-        "cloudTrailEventSource": {
-          "target": "smithy.api#String"
-        }
-      },
-      "traits": {
-        "smithy.api#trait": {
-          "selector": "service"
-        }
-      }
-    },
-    "aws.auth#sigv4": {
-      "type": "structure",
-      "members": {
-        "name": {
-          "target": "smithy.api#String",
-          "traits": {
-            "smithy.api#documentation": "The signature version 4 service signing name to use in the credential scope when signing requests. This value SHOULD match the `arnNamespace` property of the `aws.api#service-trait`.",
-            "smithy.api#externalDocumentation": {
-              "Reference": "https://docs.aws.amazon.com/general/latest/gr/sigv4-create-string-to-sign.html"
-            },
-            "smithy.api#required": {}
-          }
-        }
-      },
-      "traits": {
-        "smithy.api#documentation": "Signature Version 4 is the process to add authentication information to AWS requests sent by HTTP. For security, most requests to AWS must be signed with an access key, which consists of an access key ID and secret access key. These two keys are commonly referred to as your security credentials.",
-        "smithy.api#externalDocumentation": {
-          "Reference": "https://docs.aws.amazon.com/general/latest/gr/signature-version-4.html"
-        },
-        "smithy.api#trait": {
-          "selector": "service"
-        }
-      }
     }
   }
 }