diff --git a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/FlowResponseStream.h b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/FlowResponseStream.h
index 3e510f2e582..99e093e81ce 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/FlowResponseStream.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/FlowResponseStream.h
@@ -5,19 +5,13 @@
 
 #pragma once
 #include <aws/bedrock-agent-runtime/BedrockAgentRuntime_EXPORTS.h>
-#include <aws/bedrock-agent-runtime/model/AccessDeniedException.h>
 #include <aws/bedrock-agent-runtime/model/BadGatewayException.h>
-#include <aws/bedrock-agent-runtime/model/ConflictException.h>
 #include <aws/bedrock-agent-runtime/model/DependencyFailedException.h>
 #include <aws/bedrock-agent-runtime/model/FlowCompletionEvent.h>
 #include <aws/bedrock-agent-runtime/model/FlowMultiTurnInputRequestEvent.h>
 #include <aws/bedrock-agent-runtime/model/FlowOutputEvent.h>
 #include <aws/bedrock-agent-runtime/model/FlowTraceEvent.h>
 #include <aws/bedrock-agent-runtime/model/InternalServerException.h>
-#include <aws/bedrock-agent-runtime/model/ResourceNotFoundException.h>
-#include <aws/bedrock-agent-runtime/model/ServiceQuotaExceededException.h>
-#include <aws/bedrock-agent-runtime/model/ThrottlingException.h>
-#include <aws/bedrock-agent-runtime/model/ValidationException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/InlineAgentResponseStream.h b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/InlineAgentResponseStream.h
index 51021658197..2582c6f705c 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/InlineAgentResponseStream.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/InlineAgentResponseStream.h
@@ -5,19 +5,13 @@
 
 #pragma once
 #include <aws/bedrock-agent-runtime/BedrockAgentRuntime_EXPORTS.h>
-#include <aws/bedrock-agent-runtime/model/AccessDeniedException.h>
 #include <aws/bedrock-agent-runtime/model/BadGatewayException.h>
 #include <aws/bedrock-agent-runtime/model/InlineAgentPayloadPart.h>
-#include <aws/bedrock-agent-runtime/model/ConflictException.h>
 #include <aws/bedrock-agent-runtime/model/DependencyFailedException.h>
 #include <aws/bedrock-agent-runtime/model/InlineAgentFilePart.h>
 #include <aws/bedrock-agent-runtime/model/InternalServerException.h>
-#include <aws/bedrock-agent-runtime/model/ResourceNotFoundException.h>
 #include <aws/bedrock-agent-runtime/model/InlineAgentReturnControlPayload.h>
-#include <aws/bedrock-agent-runtime/model/ServiceQuotaExceededException.h>
-#include <aws/bedrock-agent-runtime/model/ThrottlingException.h>
 #include <aws/bedrock-agent-runtime/model/InlineAgentTracePart.h>
-#include <aws/bedrock-agent-runtime/model/ValidationException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/OptimizedPromptStream.h b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/OptimizedPromptStream.h
index a20d78137c6..8db919118cb 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/OptimizedPromptStream.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/OptimizedPromptStream.h
@@ -5,14 +5,11 @@
 
 #pragma once
 #include <aws/bedrock-agent-runtime/BedrockAgentRuntime_EXPORTS.h>
-#include <aws/bedrock-agent-runtime/model/AccessDeniedException.h>
 #include <aws/bedrock-agent-runtime/model/AnalyzePromptEvent.h>
 #include <aws/bedrock-agent-runtime/model/BadGatewayException.h>
 #include <aws/bedrock-agent-runtime/model/DependencyFailedException.h>
 #include <aws/bedrock-agent-runtime/model/InternalServerException.h>
 #include <aws/bedrock-agent-runtime/model/OptimizedPromptEvent.h>
-#include <aws/bedrock-agent-runtime/model/ThrottlingException.h>
-#include <aws/bedrock-agent-runtime/model/ValidationException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/ResponseStream.h b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/ResponseStream.h
index 2f2cef9ddc2..c4a8d785e34 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/ResponseStream.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/ResponseStream.h
@@ -5,20 +5,13 @@
 
 #pragma once
 #include <aws/bedrock-agent-runtime/BedrockAgentRuntime_EXPORTS.h>
-#include <aws/bedrock-agent-runtime/model/AccessDeniedException.h>
 #include <aws/bedrock-agent-runtime/model/BadGatewayException.h>
 #include <aws/bedrock-agent-runtime/model/PayloadPart.h>
-#include <aws/bedrock-agent-runtime/model/ConflictException.h>
 #include <aws/bedrock-agent-runtime/model/DependencyFailedException.h>
 #include <aws/bedrock-agent-runtime/model/FilePart.h>
 #include <aws/bedrock-agent-runtime/model/InternalServerException.h>
-#include <aws/bedrock-agent-runtime/model/ModelNotReadyException.h>
-#include <aws/bedrock-agent-runtime/model/ResourceNotFoundException.h>
 #include <aws/bedrock-agent-runtime/model/ReturnControlPayload.h>
-#include <aws/bedrock-agent-runtime/model/ServiceQuotaExceededException.h>
-#include <aws/bedrock-agent-runtime/model/ThrottlingException.h>
 #include <aws/bedrock-agent-runtime/model/TracePart.h>
-#include <aws/bedrock-agent-runtime/model/ValidationException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/RetrieveAndGenerateStreamResponseOutput.h b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/RetrieveAndGenerateStreamResponseOutput.h
index e3a815e3279..cc97e697003 100644
--- a/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/RetrieveAndGenerateStreamResponseOutput.h
+++ b/generated/src/aws-cpp-sdk-bedrock-agent-runtime/include/aws/bedrock-agent-runtime/model/RetrieveAndGenerateStreamResponseOutput.h
@@ -5,18 +5,12 @@
 
 #pragma once
 #include <aws/bedrock-agent-runtime/BedrockAgentRuntime_EXPORTS.h>
-#include <aws/bedrock-agent-runtime/model/AccessDeniedException.h>
 #include <aws/bedrock-agent-runtime/model/BadGatewayException.h>
 #include <aws/bedrock-agent-runtime/model/CitationEvent.h>
-#include <aws/bedrock-agent-runtime/model/ConflictException.h>
 #include <aws/bedrock-agent-runtime/model/DependencyFailedException.h>
 #include <aws/bedrock-agent-runtime/model/GuardrailEvent.h>
 #include <aws/bedrock-agent-runtime/model/InternalServerException.h>
 #include <aws/bedrock-agent-runtime/model/RetrieveAndGenerateOutputEvent.h>
-#include <aws/bedrock-agent-runtime/model/ResourceNotFoundException.h>
-#include <aws/bedrock-agent-runtime/model/ServiceQuotaExceededException.h>
-#include <aws/bedrock-agent-runtime/model/ThrottlingException.h>
-#include <aws/bedrock-agent-runtime/model/ValidationException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ConverseStreamOutput.h b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ConverseStreamOutput.h
index 1a1d60a8405..bd716bb2e84 100644
--- a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ConverseStreamOutput.h
+++ b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ConverseStreamOutput.h
@@ -11,11 +11,7 @@
 #include <aws/bedrock-runtime/model/ContentBlockStopEvent.h>
 #include <aws/bedrock-runtime/model/MessageStopEvent.h>
 #include <aws/bedrock-runtime/model/ConverseStreamMetadataEvent.h>
-#include <aws/bedrock-runtime/model/InternalServerException.h>
 #include <aws/bedrock-runtime/model/ModelStreamErrorException.h>
-#include <aws/bedrock-runtime/model/ValidationException.h>
-#include <aws/bedrock-runtime/model/ThrottlingException.h>
-#include <aws/bedrock-runtime/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/InvokeModelWithBidirectionalStreamOutput.h b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/InvokeModelWithBidirectionalStreamOutput.h
index 12b70560126..de80b37d4c1 100644
--- a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/InvokeModelWithBidirectionalStreamOutput.h
+++ b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/InvokeModelWithBidirectionalStreamOutput.h
@@ -6,12 +6,7 @@
 #pragma once
 #include <aws/bedrock-runtime/BedrockRuntime_EXPORTS.h>
 #include <aws/bedrock-runtime/model/BidirectionalOutputPayloadPart.h>
-#include <aws/bedrock-runtime/model/InternalServerException.h>
 #include <aws/bedrock-runtime/model/ModelStreamErrorException.h>
-#include <aws/bedrock-runtime/model/ValidationException.h>
-#include <aws/bedrock-runtime/model/ThrottlingException.h>
-#include <aws/bedrock-runtime/model/ModelTimeoutException.h>
-#include <aws/bedrock-runtime/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ResponseStream.h b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ResponseStream.h
index 308bc7262b9..2f047537a2d 100644
--- a/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ResponseStream.h
+++ b/generated/src/aws-cpp-sdk-bedrock-runtime/include/aws/bedrock-runtime/model/ResponseStream.h
@@ -6,12 +6,7 @@
 #pragma once
 #include <aws/bedrock-runtime/BedrockRuntime_EXPORTS.h>
 #include <aws/bedrock-runtime/model/PayloadPart.h>
-#include <aws/bedrock-runtime/model/InternalServerException.h>
 #include <aws/bedrock-runtime/model/ModelStreamErrorException.h>
-#include <aws/bedrock-runtime/model/ValidationException.h>
-#include <aws/bedrock-runtime/model/ThrottlingException.h>
-#include <aws/bedrock-runtime/model/ModelTimeoutException.h>
-#include <aws/bedrock-runtime/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/model/ResponseStream.h b/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/model/ResponseStream.h
index 07dd7340b1f..274937ea6ef 100644
--- a/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/model/ResponseStream.h
+++ b/generated/src/aws-cpp-sdk-iotsitewise/include/aws/iotsitewise/model/ResponseStream.h
@@ -7,13 +7,7 @@
 #include <aws/iotsitewise/IoTSiteWise_EXPORTS.h>
 #include <aws/iotsitewise/model/Trace.h>
 #include <aws/iotsitewise/model/InvocationOutput.h>
-#include <aws/iotsitewise/model/AccessDeniedException.h>
 #include <aws/iotsitewise/model/ConflictingOperationException.h>
-#include <aws/iotsitewise/model/InternalFailureException.h>
-#include <aws/iotsitewise/model/InvalidRequestException.h>
-#include <aws/iotsitewise/model/LimitExceededException.h>
-#include <aws/iotsitewise/model/ResourceNotFoundException.h>
-#include <aws/iotsitewise/model/ThrottlingException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/model/SubscribeToShardEventStream.h b/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/model/SubscribeToShardEventStream.h
index 6b9aa83ed1c..db31b27de92 100644
--- a/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/model/SubscribeToShardEventStream.h
+++ b/generated/src/aws-cpp-sdk-kinesis/include/aws/kinesis/model/SubscribeToShardEventStream.h
@@ -6,15 +6,6 @@
 #pragma once
 #include <aws/kinesis/Kinesis_EXPORTS.h>
 #include <aws/kinesis/model/SubscribeToShardEvent.h>
-#include <aws/kinesis/model/ResourceNotFoundException.h>
-#include <aws/kinesis/model/ResourceInUseException.h>
-#include <aws/kinesis/model/KMSDisabledException.h>
-#include <aws/kinesis/model/KMSInvalidStateException.h>
-#include <aws/kinesis/model/KMSAccessDeniedException.h>
-#include <aws/kinesis/model/KMSNotFoundException.h>
-#include <aws/kinesis/model/KMSOptInRequired.h>
-#include <aws/kinesis/model/KMSThrottlingException.h>
-#include <aws/kinesis/model/InternalFailureException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/model/StartConversationResponseEventStream.h b/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/model/StartConversationResponseEventStream.h
index 51e3c9bd4ba..bc9231343a0 100644
--- a/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/model/StartConversationResponseEventStream.h
+++ b/generated/src/aws-cpp-sdk-lexv2-runtime/include/aws/lexv2-runtime/model/StartConversationResponseEventStream.h
@@ -11,14 +11,6 @@
 #include <aws/lexv2-runtime/model/TextResponseEvent.h>
 #include <aws/lexv2-runtime/model/AudioResponseEvent.h>
 #include <aws/lexv2-runtime/model/HeartbeatEvent.h>
-#include <aws/lexv2-runtime/model/AccessDeniedException.h>
-#include <aws/lexv2-runtime/model/ResourceNotFoundException.h>
-#include <aws/lexv2-runtime/model/ValidationException.h>
-#include <aws/lexv2-runtime/model/ThrottlingException.h>
-#include <aws/lexv2-runtime/model/InternalServerException.h>
-#include <aws/lexv2-runtime/model/ConflictException.h>
-#include <aws/lexv2-runtime/model/DependencyFailedException.h>
-#include <aws/lexv2-runtime/model/BadGatewayException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-logs/include/aws/logs/model/StartLiveTailResponseStream.h b/generated/src/aws-cpp-sdk-logs/include/aws/logs/model/StartLiveTailResponseStream.h
index 0167c003e1c..3a463f30d60 100644
--- a/generated/src/aws-cpp-sdk-logs/include/aws/logs/model/StartLiveTailResponseStream.h
+++ b/generated/src/aws-cpp-sdk-logs/include/aws/logs/model/StartLiveTailResponseStream.h
@@ -7,8 +7,6 @@
 #include <aws/logs/CloudWatchLogs_EXPORTS.h>
 #include <aws/logs/model/LiveTailSessionStart.h>
 #include <aws/logs/model/LiveTailSessionUpdate.h>
-#include <aws/logs/model/SessionTimeoutException.h>
-#include <aws/logs/model/SessionStreamingException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/model/ResponseStream.h b/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/model/ResponseStream.h
index 1d6ab880be9..06ef684fb8e 100644
--- a/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/model/ResponseStream.h
+++ b/generated/src/aws-cpp-sdk-sagemaker-runtime/include/aws/sagemaker-runtime/model/ResponseStream.h
@@ -7,7 +7,6 @@
 #include <aws/sagemaker-runtime/SageMakerRuntime_EXPORTS.h>
 #include <aws/sagemaker-runtime/model/PayloadPart.h>
 #include <aws/sagemaker-runtime/model/ModelStreamError.h>
-#include <aws/sagemaker-runtime/model/InternalStreamFailure.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/CallAnalyticsTranscriptResultStream.h b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/CallAnalyticsTranscriptResultStream.h
index 78a6084165d..62b3efcec4f 100644
--- a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/CallAnalyticsTranscriptResultStream.h
+++ b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/CallAnalyticsTranscriptResultStream.h
@@ -7,11 +7,6 @@
 #include <aws/transcribestreaming/TranscribeStreamingService_EXPORTS.h>
 #include <aws/transcribestreaming/model/UtteranceEvent.h>
 #include <aws/transcribestreaming/model/CategoryEvent.h>
-#include <aws/transcribestreaming/model/BadRequestException.h>
-#include <aws/transcribestreaming/model/LimitExceededException.h>
-#include <aws/transcribestreaming/model/InternalFailureException.h>
-#include <aws/transcribestreaming/model/ConflictException.h>
-#include <aws/transcribestreaming/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalScribeResultStream.h b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalScribeResultStream.h
index 05b93666d94..435f91e8f5a 100644
--- a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalScribeResultStream.h
+++ b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalScribeResultStream.h
@@ -6,11 +6,6 @@
 #pragma once
 #include <aws/transcribestreaming/TranscribeStreamingService_EXPORTS.h>
 #include <aws/transcribestreaming/model/MedicalScribeTranscriptEvent.h>
-#include <aws/transcribestreaming/model/BadRequestException.h>
-#include <aws/transcribestreaming/model/LimitExceededException.h>
-#include <aws/transcribestreaming/model/InternalFailureException.h>
-#include <aws/transcribestreaming/model/ConflictException.h>
-#include <aws/transcribestreaming/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalTranscriptResultStream.h b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalTranscriptResultStream.h
index 2659d3172c3..51608fc5e8f 100644
--- a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalTranscriptResultStream.h
+++ b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/MedicalTranscriptResultStream.h
@@ -6,11 +6,6 @@
 #pragma once
 #include <aws/transcribestreaming/TranscribeStreamingService_EXPORTS.h>
 #include <aws/transcribestreaming/model/MedicalTranscriptEvent.h>
-#include <aws/transcribestreaming/model/BadRequestException.h>
-#include <aws/transcribestreaming/model/LimitExceededException.h>
-#include <aws/transcribestreaming/model/InternalFailureException.h>
-#include <aws/transcribestreaming/model/ConflictException.h>
-#include <aws/transcribestreaming/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/TranscriptResultStream.h b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/TranscriptResultStream.h
index 60fa88d443c..ef5b8fe553d 100644
--- a/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/TranscriptResultStream.h
+++ b/generated/src/aws-cpp-sdk-transcribestreaming/include/aws/transcribestreaming/model/TranscriptResultStream.h
@@ -6,11 +6,6 @@
 #pragma once
 #include <aws/transcribestreaming/TranscribeStreamingService_EXPORTS.h>
 #include <aws/transcribestreaming/model/TranscriptEvent.h>
-#include <aws/transcribestreaming/model/BadRequestException.h>
-#include <aws/transcribestreaming/model/LimitExceededException.h>
-#include <aws/transcribestreaming/model/InternalFailureException.h>
-#include <aws/transcribestreaming/model/ConflictException.h>
-#include <aws/transcribestreaming/model/ServiceUnavailableException.h>
 #include <utility>
 
 namespace Aws
diff --git a/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/Shape.java b/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/Shape.java
index 2f998236406..c5bb54bb294 100644
--- a/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/Shape.java
+++ b/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/Shape.java
@@ -123,6 +123,10 @@ public boolean isJsonModeledException() {
         return members.keySet().parallelStream().anyMatch(key -> !key.equals("Message") && !key.equals("message"));
     }
 
+    public boolean isModeledException() {
+        return isXmlModeledException() || isJsonModeledException();
+    }
+
     public boolean isMemberRequired(String member) {
         ShapeMember shapeMember = members.get(member);
         return shapeMember != null && members.get(member).isRequired();
diff --git a/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/cpp/CppViewHelper.java b/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/cpp/CppViewHelper.java
index 087e972972f..c55ec55a765 100644
--- a/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/cpp/CppViewHelper.java
+++ b/tools/code-generation/generator/src/main/java/com/amazonaws/util/awsclientgenerator/domainmodels/codegeneration/cpp/CppViewHelper.java
@@ -353,6 +353,11 @@ public static Set<String> computeHeaderIncludes(String projectName, Shape shape)
                 }
             }
             if(!next.isPrimitive()) {
+                if (next.isException() && !next.isModeledException()) {
+                    // C++ SDK code generator skips generating exceptions that can be expressed using
+                    // a purely built-in C++ SDK Core exception class, so they must not be included.
+                    continue;
+                }
                 // if `next` is a direct member of a `shape` and they are mutually referenced
                 if(next.isMutuallyReferencedWith(shape) &&
                         shape.getMembers().values().parallelStream().anyMatch(member -> member.getShape().getName().equals(next.getName()))) {