...
Login to the AWS Console at https://console.aws.amazon.com and navigate to the 'S3' service.
Click on the the S3 bucket that was reported.
Click on the 'Properties' tab.
Under the 'Server access logging' section, select 'Enable logging' option.
...
Enable logging.
Set Target Bucket to receive the log record objects. Set Target Prefix (Optional).
Choose save.
Importent :
Reference: