diff --git a/arch/lza_extensions/customizations/GCGuardrailsRoles.yaml b/arch/lza_extensions/customizations/GCGuardrailsRoles.yaml
index 07cefdf..ee8b1e2 100644
--- a/arch/lza_extensions/customizations/GCGuardrailsRoles.yaml
+++ b/arch/lza_extensions/customizations/GCGuardrailsRoles.yaml
@@ -449,6 +449,41 @@ Resources:
       Roles:
         - Ref: GCLambdaExecutionRole
 
+  # OpenSearch Access
+  GCLambdaExecutionRoleOpenSearchPolicy:
+    Type: AWS::IAM::Policy
+    Properties:
+      PolicyDocument:
+        Version: "2012-10-17"
+        Statement:
+          - Sid: AllowOpenSearchAccess
+            Action:
+              - "es:Desc*"
+            Resource:
+              - "*"
+            Effect: Allow
+      PolicyName: !Sub "${OrganizationName}GCLambdaExecutionRoleOpenSearchPolicy"
+      Roles:
+        - !Ref GCLambdaExecutionRole2
+        
+
+  # MarketPlace Access
+  GCLambdaExecutionRoleMarketPlacePolicy:
+    Type: AWS::IAM::Policy
+    Properties:
+      PolicyDocument:
+        Version: "2012-10-17"
+        Statement:
+          - Sid: AllowMarketPlaceAccess
+            Action:
+              - "aws-marketplace:Li*"
+            Resource:
+              - "*"
+            Effect: Allow
+      PolicyName: !Sub "${OrganizationName}GCLambdaExecutionRoleMarketPlacePolicy"
+      Roles:
+        - !Ref GCLambdaExecutionRole2
+        
   # IAM Access
   GCLambdaExecutionRoleCloudFrontPolicy:
     Type: AWS::IAM::Policy
diff --git a/arch/templates/EvidenceCollectionComponents.yaml b/arch/templates/EvidenceCollectionComponents.yaml
index 7d65e2a..e95cdc2 100644
--- a/arch/templates/EvidenceCollectionComponents.yaml
+++ b/arch/templates/EvidenceCollectionComponents.yaml
@@ -222,6 +222,8 @@ Resources:
               - Effect: Allow
                 Action:
                   - organizations:ListTagsForResource
+                  - organizations:Des*
+                  - lambda:In*
                 Resource: "*"
         - PolicyName: S3Policy
           PolicyDocument:
@@ -268,7 +270,7 @@ Resources:
                   - !Sub "arn:aws:logs:${AWS::Region}:${AWS::AccountId}:log-group:/aws/lambda/${OrganizationName}gc*"
                 Effect: Allow
 
-  ## Create schedule
+  ## Create schedule.
   CronjobsScheduledRule:
     Condition: IsAuditAccount
     Type: AWS::Events::Rule
diff --git a/arch/templates/main.yaml b/arch/templates/main.yaml
index 809d662..63526b1 100644
--- a/arch/templates/main.yaml
+++ b/arch/templates/main.yaml
@@ -655,6 +655,39 @@ Resources:
       Runtime: !Ref PythonRuntime
       Timeout: 90
 
+  # OpenSearch Access
+  GCLambdaExecutionRoleOpenSearchPolicy:
+    Type: AWS::IAM::Policy
+    Properties:
+      PolicyDocument:
+        Version: "2012-10-17"
+        Statement:
+          - Sid: AllowOpenSearchAccess
+            Action:
+              - "es:Desc*"
+            Resource:
+              - "*"
+            Effect: Allow
+      PolicyName: !Sub "${OrganizationName}GCLambdaExecutionRoleOpenSearchPolicy"
+      Roles:
+        - !Ref GCLambdaExecutionRole2
+  
+  # MarketPlace Access
+  GCLambdaExecutionRoleMarketPlacePolicy:
+    Type: AWS::IAM::Policy
+    Properties:
+      PolicyDocument:
+        Version: "2012-10-17"
+        Statement:
+          - Sid: AllowMarketPlaceAccess
+            Action:
+              - "aws-marketplace:Li*"
+            Resource:
+              - "*"
+            Effect: Allow
+      PolicyName: !Sub "${OrganizationName}GCLambdaExecutionRoleMarketPlacePolicy"
+      Roles:
+        - !Ref GCLambdaExecutionRole2
   GenerateEvidenceBucketName:
     Type: Custom::GenerateEvidenceBucketName
     Condition: GenerateEvidenceBucketName
diff --git a/src/lambda/aws_compile_audit_report/app.py b/src/lambda/aws_compile_audit_report/app.py
index 2f30330..321f171 100644
--- a/src/lambda/aws_compile_audit_report/app.py
+++ b/src/lambda/aws_compile_audit_report/app.py
@@ -10,6 +10,7 @@
 import time
 import uuid
 import concurrent.futures
+import botocore.exceptions
 
 import boto3
 from botocore.exceptions import BotoCoreError, ClientError
@@ -54,10 +55,26 @@ def create_boto3_clients():
         "organizations": get_client("organizations", assume_role=False)
     }
 
+
 # MAIN LAMBDA HANDLER
 def lambda_handler(event, context):
     logger.info("Lambda invocation started (structured).")
     clients = create_boto3_clients()
+    # Initialize AWS Organizations client
+    org_client = boto3.client("organizations")
+
+    # Fetch Management Account ID
+    def get_management_account_id():
+        try:
+            response = org_client.describe_organization()
+            return response["Organization"]["MasterAccountId"]  # Older accounts use "MasterAccountId"
+        except Exception as e:
+            print(f"Error fetching management account ID: {e}")
+            return "unknown"
+
+    # Retrieve Management Account ID
+    global management_account_id
+    management_account_id = get_management_account_id()
 
     # Handle concurrency limit
     current_concurrency = event.get("current_concurrency", 1)
@@ -439,7 +456,7 @@ def finalize_and_cleanup_if_necessary(temp_dir, state, s3_client):
         logger.info("State is finished. Merging partial CSV files.")
         merged_csv = merge_chunk_files(state["chunks_written"], temp_dir)
         if merged_csv:
-            final_key = f'{datetime.datetime.now(tz=datetime.timezone.utc).strftime(config["DATE_FORMAT"])}.csv'
+            final_key = f'{management_account_id}_{datetime.datetime.now(tz=datetime.timezone.utc).strftime(config["DATE_FORMAT"])}.csv'
             try:
                 with open(merged_csv, "rb") as f:
                     safe_aws_call(
@@ -487,7 +504,7 @@ def merge_chunk_files(chunk_files, temp_dir):
     return merged_path
 
 def cleanup_temp_directory(temp_dir):
-    """Remove the entire temporary directory."""
+    """Remove the entire temporary directory.."""
     if os.path.exists(temp_dir):
         shutil.rmtree(temp_dir, ignore_errors=True)
         logger.info("Cleaned up temp directory: %s", temp_dir)
\ No newline at end of file