Sage maker model monitoring data quality error 'FailureReason': 'Job inputs had no data'

I am trying to set up a data quality job for a batch transfer model. All inputs look right to me but the job does not kick off and displays above error when job is described.

my_default_monitor.create_monitoring_schedule(
    monitor_schedule_name=mon_schedule_name,    
     batch_transform_input=BatchTransformInput(
        data_captured_destination_s3_uri=s3_data_capture_path,
        destination="/opt/ml/processing/input",
        dataset_format=MonitoringDatasetFormat.csv(header=False)
    ),   
    output_s3_uri=s3_reports_path,
    statistics= statistics_path,
    constraints = constraints_path,    
    schedule_cron_expression=  CronExpressionGenerator.daily(hour=19),
    enable_cloudwatch_metrics=True
)

the file in 's3_data_capture_path' is a .csv file. It is created every month format it being same as training input file for model monitoring baseline job.

Trouble shooting, I did so far as below ... still same error. The error message is not at all helpful!

1. flip s3_data_capture_path to relative path to path to actual file copied from aws console.
2. try both daily cron job and hourly cron job

Questions Other than SMS notebook, can I trace more log details elsewhere? It does not seem to kick off and seems to fail in validation... Is it not actually finding the file (which is unlikely as I verified this in different ways) or is it looking for a specific format? Could it be possible that the daily run or hourly looks for values in the last hour or last day?

Please suggest!