cPanel API 1 Removal and Replacement with UAPI

The cPanel API 1 is being removed and replaced in cPanel version 88+.  WHM will send an email stating that cPanel API 1 is in use and is deprecated.  Custom integrations using cPanel's API 1 it will no longer work after Version 86. This will affect any custom code that relies on the old API 1 calls, which could include integrations, plugins, tools, or products which will break if they are not updated to UAPI.  Server owners should resolve any dependencies on cPanel API 1 before upgrading to Version 88.

The notification from WHM will appear as such: 

You are receiving this notification because one of your accounts uses a custom cPanel integration or plugin that relies on the cPanel API 1 system. We deprecated cPanel API 1 in 2012 and plan to begin removing it from the product in cPanel & WHM version 88. This server is currently on cPanel & WHM version “86.0.8”.

Handling cPanel API 1 Removal

NOTE: With the release of cPanel version 88, cPanel API 1 functionality is removed, and any custom code or integration using these calls will no longer work.

1. Locate scripts that interact with WHM / cPanel using cPanel API 1
2. Update integrations to use UAPI or cPanel API 2 if a UAPI equivalent is not available 
3. If reliant on plugins that use cPanel API 1, contact the maintainers to ensure that the plugins are updated to use UAPI so that they will be compatible after Version 86
   NOTE: If custom script, update calls to WHM/cPanel to v2 of the API.
4. Find alternatives if update is not available