Fake transactions are now batched in the sandbox environment. This occurs at 22 GMT on a daily basis.

The TransactionEvent webhook will be triggered for every transaction marking the transaction with a settle date to specify the funds are ready to be pushed out. This normally happens 1-2 business days after the transaction.

The BatchAdd webhook event fires when the transactions are added to a batch followed by a BatchUpdate when the funds are "Sent" to the merchant. This also happens 1-2 business days after the transaction, however, the test environment compresses this timeline to make it easier for developers.