Hello, I try to delete a Catalogware ZClass with subobjects that are also ZClasses. That's my method to delete a Class: -->> <dtml-in "objectValues('ZClassPage')"> <dtml-let x=sequence-item> <dtml- if "in_work"> <dtml-call "manage_delObjects([x.id])"> </dtml-if> </dtml-let> </dtml-in> But Zope answers: An exception occurred in a DTML method or document. Error type: BadRequest Error value: 980785769 does not exist But '980785769' EXISTS in the management-interface !! :-(( Thanks!