A subcontractor holdback sits between an approved cost and a later payment. When release documentation arrives, the workpaper should show which original withheld amount is being paid rather than clearing the oldest balance by convenience.
A workable subcontractor holdback payments schedule names the entity, period, currency, source systems, cutoff, preparer, and reviewer. It also records the report filters and extraction time. Those details let the next reviewer reproduce the work instead of trusting an unexplained total.