SAP Message WFEA034 - Event creator in &4: Binding from workflow to event aborted

Diagnosis Serious errors have occurred in the binding from workflow to event instep &V1& (event creator) of multistep task &V4& . As a consequence,workflow &V2& has been forced into error status. Procedure "Change Workflow Container" then "Restart After Error" could suffice.The cause, however, is an inconsistency in the binding definition inV4, step v1.