One of the tools used by the Shared Cataloging Program (SCP) is the PID (Persistent Identifier) Service, which allows SCP to create PIDs for systemwide-licensed resources. PIDs act as substitute URLs for a resource and the PID service allows SCP staff to quickly and easily create, modify, or delete URLs in catalog records.

Because the previous version of the PID server was based on software that is no longer supported, CDL decided to rewrite the underlying code. Working with key stakeholders, CDL’s Discovery to Delivery (D2D) team worked to make the new PID service better than the previous incarnation in every way.

The new PID service has more searching functionality and features for the cataloging staff who are the primary users of the service. While login accounts are required for the catalogers who create, modify, or delete PIDs, any UC user can search the new interface (


Using the public interface, users can search by PID numbers (e.g., 10257), by a component of the URL (, by Group (campuses that actively utilize the service), PID Range, and if the PIDs are still active (in use) or not. The PID Search results display below the online search form.


Note: The PID Service works best on Google Chrome, Firefox, or Safari web browsers; the Internet Explorer (IE) web browser does not display the PID service screens properly.