staging to target mapping is not done

Error : staging to target mapping is not done

Solution :
static void regenerateDMFTargetMapping(Args _args)
{
    DMFTargetXMLToEntityMap     dmfTargetXMLToEntityMap;
    DMFEntity                                   dmfEntity;

    // delete all target Mappings
    ttsBegin;
        delete_from dmfTargetXMLToEntityMap;
    ttsCommit;

    // Regenerate Target Mapping for all Entities
    while select dmfEntity
    {
        DMFTargetXMLToEntityMap::generateMapping(dmfEntity);
    } 
    info("All Done!");

}

Note : Above job will run for all entities. If you want run only particular one entity add where condition in Regenerate Target Mapping.