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  • Java 17 (or later) and Tomcat 10 (or later) is required for the backend.  The DSpace 8 backend can no longer be run on Java 11 or Tomcat 9 as it has been updated to support Jakarta Enterprise Edition 9+.  You must upgrade these dependencies in order to run DSpace 8.  If you are using a different servlet engine, you must ensure it is compatible with Jakarta EE 9+ (e.g. Jetty must be version 11 or later)
    • If you have any custom Java code or plugins, they MUST must all be migrated to use "jakarta.*" dependencies instead of "javax.*" dependencies.  It is not possible to use older "javax.*" dependencies in DSpace 8. 
  • The deprecated REST API v6 was removed.  All custom code must migrate to the new REST API (first released in 7.x).  Code written against the older REST API v6 must be rewritten, as the new REST API is not backwards compatible. For more information on the REST API v6, see the DSpace 7.x documentation.

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