"dkane" wrote : 1) Is it possible, that incorrect processing of preceding JSF controls causes incorrect processing of following controls in the same page? (probably not pure Seam but JFS question) On form submission (which h:commandXXX does), yes, as all sorts of errors can occur (e.g. model update, validation, conversion. You need to output these messages via h:messages anonymous wrote : 2) Does s:convertEntities, indeed, require long-running conversation ? If so - why ? http://wiki.jboss.org/wiki/Wiki.jsp?page=SeamProblemsFAQ and search back across the forums, this has been explained many times. I'm going to move this into the reference manual soon. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4078761#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...