Every unreconciled Green Dot credit, in posting order, with its batch decision. It reads them all because each decision depends on the others.
GREENDOT_BATCH, plus DEPOSIT_IDS of the batch's non-cancelled deposits,
and restamps the rail GREENDOT_SETTLEMENT, keeping the ACH trace fields.
Green Dot settlement credits against their batches (RFC § 4.4, § 4.5):
candidatesdecides which batch each unreconciled credit settles, andreconcilerecords it through the credit compare-and-set.