DPM tried to do a SQL log backup, either as part of a backup job or a recovery to latest point in time job. The SQL log backup ...

DPM tried to do a SQL log backup, either as part of a backup job or a recovery to latest point in time job. The SQL log backup job has detected a discontinuity in the SQL log chain for  %DatasourceType; database %DatasourceName; since the last backup. All incremental backup jobs will fail until an express full backup runs.