Why is there a short message to remind you to supplement the customs clearance information after the successful submission of the E-Man information?

did you submit the information according to the email sent to you? Such as ID number, recipient, mobile phone number and email address. Whether it is filled in correctly. And uploaded the front and back pictures of the ID card.

if you didn't send an email, you submitted the information. That is, there is a time difference between information.