PSPNG - Messaging errors

PSPNG logs many of these messages during full-sync processing. While provisioning occurs successfully, the messages are noise and can mask real problems:
2019-07-11T01:58:17+00:00 DAEMON:dev grouper-api;grouper.log;grouper_dev;daemon;2019-07-10 21:58:17,919: [FullSyncer(psp_UFADdev_ePEnt)-MessageReaderThread-changelog] ERROR BatchingBatch.performExecution(124) - - HHH000315: Exception executing batch [Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1]
and
2019-07-11T01:59:44+00:00 DAEMON:dev grouper-api;grouper_event.log;grouper_dev;daemon;2019-07-10 21:59:44,129: [FullSyncer(psp_UFADdev)-Thread] WARN  GrouperBuiltinMessagingSystem.acknowledge(1411)    Grouper message already had state: PROCESSED