The schema needs to be extended on this tree

Source:  ZENworks Server Management; Policy and Distribution Services installation on Linux or Solaris servers.

Explanation:  The installation script creates the Distributor and/or Subscriber objects in the eDirectory tree when you install the Policy and Distribution Services software. The eDirectory schema must be extended to accommodate Tiered Electronic Distribution objects before you begin the installation.

Possible Cause:  You have not yet extended the eDirectory schema for Tiered Electronic Distribution objects.

Action:  Follow the instructions in "Extending the eDirectory Schema for Distributor and Subscriber Objects" on page 54, then rerun the installation.