The InvalidAccount seen on the PoC was not the reconfigure: 23.11.4 without accounting storage has its main scheduler mark a batch job so, and backfill starts it on its next pass (job 4 waited 15 s). bf_interval=10 keeps that short; the extra restart is taken out again. MailProg=/bin/true quiets the warning on every start. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>