@creece More context Info, my flow: - Purchase Order button added on beforeLoad(); - Calling Function enterDate on CS. - When the user click the Button it takes the user to a Suitelet. - The user enter the Date and submit the form. - A message.CONFIRMATION is displayed saying among other things saying you will be redirected back to the Record. - window.location back to the record. - User click the button again then I got all those erros and the Purchase Order hand for a few seconds, then it eventually go to the Suitelet Again...