Hi ! I have solved my problem. Go here : https://github.com/xwiki/xwiki-platform/blob/xwiki-platform-3.5/xwiki-platf… XWO_ID is constructed by concatenating the document name, the XClass name, and the object number. -- View this message in context: http://xwiki.475771.n2.nabble.com/Database-XWO-ID-tp7502808p7505180.html Sent from the XWiki- Users mailing list archive at Nabble.com.