Hello To find and fix CSV header errors in multiple files, write a script to check for duplicate column names and invalid fields in the header row. Then, run the script on your CSV file directory. For Python, a basic example might look like this:   import csv import os def check_csv_headers(file_path): with open(file_path, 'r') as csvfile: csvreader = csv.DictReader(csvfile) headers = csvreader.fieldnames if len(headers) != len(set(headers)): print(f"Duplicate columns in: {file_path}") if '' in headers: print(f"Invalid field name in: {file_path}") # Directory containing CSV files directory = '/path/to/csv/files' for filename in os.listdir(directory): if filename.endswith('.csv'): file_path = os.path.join(directory, filename) check_csv_headers(file_path) Save the script to a file, make it executable (if needed), and run it against your directory containing the CSV files. python check_csv_headers.py This approach automates the process of scanning your CSV files for errors and should help you efficiently locate and fix these issues across multiple files within your Splunk Heavy Forwarder. You can also check https://community.splunk.com/t5/Knowledge-Management/bd-p/knowledge-management/CCSP Certification Thank you ... View more