Specifies the EFS resource ID preference to set for the user's Amazon Web Services account,
in the current Amazon Web Services Region, either
LONG_ID (17 characters), or
SHORT_ID (8 characters).
Starting in October, 2021, you will receive an error when setting the account preference to
SHORT_ID. Contact Amazon Web Services support if you receive an error and must
use short IDs for file system and mount target resources.