For an import, does it identify the port(s) of discharge?

Sequence no
5
Slug
import-discharge-port
Question
For an import, does it identify the port(s) of discharge?
Required element
Import port(s) of discharge.
Provision slug
cfr-541-6-a
Consequence if missing
Missing required information removes the billed party’s obligation to pay the applicable charge under §541.5.

Source