https://connect.hyland.com/t5/alfresco-forum/contentmodel-issue/m-p/134054#M36091 <P>Yes I think "dc" prefix is used by alfresco</P><P>Alfresco has a list of content model namespaces and prefix which should not be used attached link of alfresco docs (Refer topic : Out-of-the-box content models) , Also there are lot more other mentioned prefix and which might cause issue</P><P><A href="https://docs.alfresco.com/content-services/latest/develop/repo-ext-points/content-model/" target="_blank" rel="nofollow noopener noreferrer">Alfresco Docs - Content Model Extension Point</A></P> Mon, 18 Jul 2022 11:24:03 GMT 14bce127 2022-07-18T11:24:03Z https://connect.hyland.com/t5/alfresco-forum/contentmodel-issue/m-p/134053#M36090 <P>Having alfresco enterprise 6.2 with documents and planning for 7.2 upgrade.having a custom model with namespace prefix as "dc". While alfresco 7.2 bootstraps,getting an error - <STRONG>context initialisation failed org.alfresco.service.namespace.NamespaceException:Namespace prefix "dc" is already in use for URI <A href="http://pur1.org/dc/elements/1.1" target="_blank" rel="noopener nofollow noreferrer">http://pur1.org/dc/elements/1.1</A> so cànnot be registerd for uri.</STRONG></P><P>Let me know any solution for this isse</P> Mon, 18 Jul 2022 05:48:32 GMT https://connect.hyland.com/t5/alfresco-forum/contentmodel-issue/m-p/134053#M36090 logu_paps 2022-07-18T05:48:32Z https://connect.hyland.com/t5/alfresco-forum/contentmodel-issue/m-p/134054#M36091 <P>Yes I think "dc" prefix is used by alfresco</P><P>Alfresco has a list of content model namespaces and prefix which should not be used attached link of alfresco docs (Refer topic : Out-of-the-box content models) , Also there are lot more other mentioned prefix and which might cause issue</P><P><A href="https://docs.alfresco.com/content-services/latest/develop/repo-ext-points/content-model/" target="_blank" rel="nofollow noopener noreferrer">Alfresco Docs - Content Model Extension Point</A></P> Mon, 18 Jul 2022 11:24:03 GMT https://connect.hyland.com/t5/alfresco-forum/contentmodel-issue/m-p/134054#M36091 14bce127 2022-07-18T11:24:03Z