Have you ever had to change the details of your EAPIS declaration after you submitted it? Do you just call similar to making a change to a flight plan?
If you need to change the EAPIS declaration, you will need to file a new one to replace the old one. You would call the customs office to alert them to the updated EAPIS. To cancel your arrival in USA, again you would just call the customs office there and tell them you aren't coming. You can't "cancel" the original EAPIS, and you don't need to.
Have you ever had to change the details of your EAPIS declaration after you submitted it? Do you just call similar to making a change to a flight plan?
If you need to change the EAPIS declaration, you will need to file a new one to replace the old one. You would call the customs office to alert them to the updated EAPIS. To cancel your arrival in USA, again you would just call the customs office there and tell them you aren't coming. You can't "cancel" the original EAPIS, and you don't need to.