diff --git a/src/pds/ingress/pds-nucleus-product-completion-checker.py b/src/pds/ingress/pds-nucleus-product-completion-checker.py
index b2b6b6d..13e7153 100644
--- a/src/pds/ingress/pds-nucleus-product-completion-checker.py
+++ b/src/pds/ingress/pds-nucleus-product-completion-checker.py
@@ -1,7 +1,7 @@
 """
-==============================================
-pds-nucleus-product-completion-checker-batch.py
-==============================================
+============================================================
+pds-nucleus-product-completion-checker.py (batch processing)
+============================================================    =
 
 Lambda function to check if the staging S3 bucket has received a complete product
 with all required files. This lambda function is triggered periodically.
@@ -18,6 +18,7 @@
 import http.client
 import base64
 import ast
+import uuid
 
 from xml.dom import minidom
 
@@ -29,10 +30,10 @@
 rds_data = boto3.client('rds-data')
 
 mwaa_env_name = 'PDS-Nucleus-Airflow-Env'
-dag_name = 'PDS_Registry_Use_Case_61_Messenger_Batch-logs'
 mwaa_cli_command = 'dags trigger'
 
 # Read environment variables from lambda configurations
+dag_name = os.environ.get('AIRFLOW_DAG_NAME')
 node_name = os.environ.get('NODE_NAME')
 es_url = os.environ.get('ES_URL')
 replace_prefix_with = os.environ.get('REPLACE_PREFIX_WITH')
@@ -47,7 +48,7 @@
 def lambda_handler(event, context):
     """ Main lambda handler """
 
-    logger.setLevel(logging.INFO)
+    logger.setLevel(logging.DEBUG)
     logger.addHandler(logging.StreamHandler())
 
     logger.info(f"Lambda Request ID: {context.aws_request_id}")
@@ -65,11 +66,13 @@ def process_completed_products():
 
     logger.debug("Checking completed products...")
 
-    sql = """
-            select distinct s3_url_of_product_label from product where processing_status = 'INCOMPLETE' and s3_url_of_product_label
-            NOT IN (select distinct s3_url_of_product_label  from product_data_file_mapping
-            where s3_url_of_data_file
-            NOT IN (select s3_url_of_data_file from data_file));
+    sql =   """
+                SELECT DISTINCT s3_url_of_product_label from product
+                WHERE processing_status = 'INCOMPLETE' and s3_url_of_product_label
+                NOT IN (SELECT s3_url_of_product_label  from product_data_file_mapping
+                where s3_url_of_data_file
+                NOT IN (SELECT s3_url_of_data_file from data_file)) and s3_url_of_product_label
+                IN (SELECT s3_url_of_product_label  from product_data_file_mapping);
             """
 
     response = rds_data.execute_statement(
@@ -136,7 +139,7 @@ def submit_data_to_nucleus(list_of_product_labels_to_process):
 
 
 def create_harvest_config_xml_and_trigger_nucleus(list_of_product_labels_to_process):
-""" Creates harvest manifest file and harvest config file and trigger Nucleus workflow """
+    """ Creates harvest manifest file and harvest config file and trigger Nucleus workflow """
 
     logger.debug('List of product labels to process:' + str(list_of_product_labels_to_process))
 
@@ -144,7 +147,7 @@ def create_harvest_config_xml_and_trigger_nucleus(list_of_product_labels_to_proc
 
     harvest_config_dir = efs_mount_path + '/harvest-configs'
 
-    file_name = os.path.basename(list_of_product_labels_to_process[0].replace("s3:/", efs_mount_path, 1))
+    file_name =  os.path.basename(list_of_product_labels_to_process[0].replace("s3:/", efs_mount_path, 1) )
 
     harvest_manifest_content = ""
     list_of_product_labels_to_process_with_file_paths = []
@@ -154,10 +157,13 @@ def create_harvest_config_xml_and_trigger_nucleus(list_of_product_labels_to_proc
         harvest_manifest_content = harvest_manifest_content + efs_product_label_file_location + '\n'
         list_of_product_labels_to_process_with_file_paths.append(efs_product_label_file_location)
 
+    # Generate a random suffix for harvest config file name and manifest file name to avoid conflicting duplicate file names
+    random_suffix = uuid.uuid4().hex
+
     try:
         os.makedirs(harvest_config_dir, exist_ok=True)
-        harvest_config_file_path = harvest_config_dir + '/harvest_' + file_name + '.cfg'
-        harvest_manifest_file_path = harvest_config_dir + '/harvest_manifest_' + file_name + '.txt'
+        harvest_config_file_path = harvest_config_dir + '/harvest_' + file_name + '_' + random_suffix + '.cfg'
+        harvest_manifest_file_path = harvest_config_dir + '/harvest_manifest_' + file_name + '_' + random_suffix + '.txt'
 
         logger.debug(f"Manifest content: {str(harvest_manifest_content)}")
 
@@ -189,6 +195,7 @@ def create_harvest_config_xml_and_trigger_nucleus(list_of_product_labels_to_proc
         logger.info(f"Created harvest config XML file: {harvest_config_file_path}")
     except Exception as e:
         logger.error(f"Error creating harvest config files in : {harvest_config_dir}. Exception: {str(e)}")
+        return
 
     trigger_nucleus_workflow(harvest_manifest_file_path, harvest_config_file_path,
                              list_of_product_labels_to_process_with_file_paths)
@@ -197,7 +204,7 @@ def create_harvest_config_xml_and_trigger_nucleus(list_of_product_labels_to_proc
 
 
 def trigger_nucleus_workflow(harvest_manifest_file_path, pds_harvest_config_file, list_of_product_labels_to_process):
-""" Triggers Nucleus workflow with parameters """
+    """ Triggers Nucleus workflow with parameters """
 
     # Convert list to comma seperated list
     delim = ","