Represents a sub-group of transactions within Batch or Retail Cycle.
Sub-batch is maintained for each group of transacions that have their own processing logic. For example, a batch that contains both credit card and ACH transactions will have two sub-batches in it.
Another example is a batch that contains transactions belonging to more than one
Merchant Account. In such cases, when processing settings are different for each account, multiple sub-batches are created.
Error transactions are placed in a separate sub-batch. Decline transactions for rebill are placed in a separate sub-batch as well.