¿Porque al enviar una solicitud de vacacion me indica este problema: System.Data.UpdateException: Entities in 'AppDataContext.JornadasEmpleos' participate in the 'fk_expemp_relpje' relationship. 0 related 'Empleo' were found. 1 'Empleo' is expected.?

Se cambio la configuracion del parametro de aplicacion "VacacionUsaJornada" a True

System.Data.UpdateException: Entities in 'AppDataContext.JornadasEmpleos' participate in the 'fk_expemp_relpje' relationship. 0 related 'Empleo' were found. 1 'Empleo' is expected. at System.Data.Mapping.Update.Internal.UpdateTranslator.RelationshipConstraintValidator.ValidateConstraints() at System.Data.Mapping.Update.Internal.UpdateTranslator.ProduceCommands() at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) at System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options) at Aseinfo.VH4.Data.AppDataContext.SaveChanges(SaveOptions options) at Aseinfo.Infrastructure.Base.Entity.GenericEntityRepository.SaveChanges() at Aseinfo.Infrastructure.Base.Entity.EntityServiceBase`2.SaveChanges() at Aseinfo.VH4.Acciones.Services.SolicitudVacacionService.FinalizaProcesamientoEntidad(EntityObject entity) at Aseinfo.VH4.WindowsServices.ApplicationJobs.AccionFinalizacionJob.Execute(JobExecutionContext context)