SAP Message WL439 - Workflow & no.& WI end & by event: Object '&' not in WI container

Diagnosis
A work item was completed by an event from an object and has reportedback to the workflow manager. However, the container element with theobject ID is missing from thework item container. Theworkflow manager can therefore not determine with which branch of theworkflow processing should be continued.
INCLUDE NA_WF_ERROR OBJECT DOKU ID TX

Procedure
Make sure the work item returns the container elements with the objectIDs of the required terminating events as a result, that is define anappropriate binding (import and export!). Assign an object ID to thecontainer elements in the method called.