On the firewall CLI, run the undo acl xxxx command in system mode. The ACL xxxx cannot be deleted.
See the figure.
1. Enter the interzone mode, cancel the application of the ACL in the interzone, and enter the following command:
[USG2200]firewall interzone zone1 zone2 (zone1 and zone2 are zone names)
[UGS2200-interzone-zone1-zone2]undo packet-filter acl xxxx inbound/outbound
2. Enter the system mode, delete acl xxxx, and enter the following command:
[USG2200]undo acl xxxx
Note that when deleting the ACL, you need to save the configuration and guarantee the service and adjust the policy.
The ACL is applied in the interzone.
Save configurations before deleting the ACL.