A complete request can be used to complete a PAYOUT_INITIALIZE transaction which is a deferred transaction that is caused by either supplying the deferred flag on the transaction request or if using Optimize and a rule is configured to defer the transaction. A request to this endpoint will result in a PAYOUT_COMPLETE transaction.
This operation will be triggered automatically if a transaction is deferred by an Optimize rule that is configured to automatically capture a transaction. It will also be triggered when a transaction is accepted in Optimize Queue or when a transaction is completed on the Transaction Detail page. There may be a need to call this endpoint to manually force completion of a transaction. e.g. in the event of a communication discrepancy when a notification is not received and a task is stuck in the Queue.