Use /v1/roundup/:id/simulateSweep to queue an early execution of the enrollment's current cadence period in a non-production environment. The normal asynchronous sweep worker performs aggregation, cadence caps, minimum checks, sufficient-funds validation, funding, receiving deposits, and lifecycle updates. Repeated requests in a successfully completed cadence period return the existing sweep; safe skipped or pre-transfer failed outcomes can be queued for reevaluation. Poll /v1/roundup/:id/listSweepTransfers and correlate by sweepKey.