SAP Message 1R213 - Error occurred when calculating document class for a document

Diagnosis
An error occurred when determining the document class for document &V2&with translation type &V1&.

System Response
The document seems to have been deleted in the system.

Procedure
Wait until the translation worklist is next regenerated. If thedocument in question appears in the new worklist, make a note of itsdocument ID and translation type, and contact your systemadministrator.