No error handler can only redirect to a view from the same application project. You can create your own implementation of the error handler and override handleError() method to redirect to a completely custom page in MWS using following code, assuming that this page has an alias
getFacesContext().getExternalContext().redirect(“/pagealias”).
Please note though that this code would only work when web service/db connector which produce an error are invoked from an explicit action. Sometimes for example web service connector can be invoked during render request with autorefresh=true. In the latter case it won’t let you to redirect using this code.
#webMethods#webMethods-BPMS#MWS-CAF-Task-Engine