Your Ebook Central Perpetual Access and DDA-discoverable holdings can be automatically updated in OCLC Worldcat Knowledgebase. To enable this service, please contact Ebook Support via the support center or by emailing ebooksupport@proquest.com. In your request, please provide the following information: Please verify with OCLC support that you are set up for Worldcat KB before placing your request with Ebook Support. 

How does the integration work? What about subscription collections? If you are a member of a consortium, we will send consortium holdings along with your locally-held titles.