To modify a Domain Name System (DNS) record in a private zone, follow these steps:
Log on to the Alibaba Cloud DNS console. In the left-side navigation pane, click PrivateZone.
On the PrivateZone page that appears, find the target private zone and click the zone name to go to the Resolution Settings page.
On the Configure DNS Settings tab, find the target record that you want to modify and click Modify in the Actions column.
In the Edit Record dialog box that appears, modify the DNS record.
Click OK to save the modification. The modified record will take effect after the specified time to live (TTL) comes to an end.