Resumes workflow execution for one or more transactions that are awaiting an asynchronous product or stopped due to an error. Products that already completed successfully are not re-run or re-billed; only the ones that are still outstanding or that failed are attempted again. Resumption is dispatched in the background, so a 200 confirms the request was accepted rather than that every transaction has finished. Poll GET /insights/{transactionId} for the resulting decision. Alternatively, the result can be sent via a webhook subscription.