Hi, | @In (required = false) | @Out (scope = BUSINESS_PROCESS, required = true) | private Long id; | Doesn't @In have to use the scope = BUSINESS_PROCESS? There is an example in the book "JBoss Seam - Simplicity and Power Beyond Java EE". There must be examples on the Internet and with Seam too. Have you double-checked against the source you're using? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4067041#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...