ADM.10:2 - Problem
A handler compares two totals or status fields without establishing their meaning, scope or time. Apparent equality is then reported as settlement, or a harmless difference in recording time is treated as failed performance.
A more serious error turns missing evidence into another payment. The record says 400 remains, so someone instructs 400 again, although the earlier instruction may already have credited the recipient. Correcting the account requires recovering the event before changing the world.