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# Transaction Types

A transaction type is the specific action taken related to an event.

| Name             | Description                                                                                                                                                                                                                             |
| :--------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| External         | Created for Returns related to transactions outsourced to Fiserv.                                                                                                                                                                       |
| Authorize        | A bank authorization to verify a consumer account. No funds are transferred during this transaction.                                                                                                                                    |
| Pay              | An authorization and capture performed within a single transaction.                                                                                                                                                                     |
| Capture          | A pay-in (funds transfer) from a customer account.                                                                                                                                                                                      |
| Refund           | Funds are moved back to the consumer account following a completed Capture or Pay transaction.                                                                                                                                          |
| Reverse          | Created when the payment is charged back by the bank (payment provider).                                                                                                                                                                |
| Deposit          | A payout (funds transfer) to a customer account.                                                                                                                                                                                        |
| Reclaim          | Funds are sent back to the merchant account following a completed Deposit.                                                                                                                                                              |
| Representment    | An attempt to reprocess a previously denied Capture transaction.                                                                                                                                                                        |
| Tokenization     | Supports two events: `tokenize` and `verify`. These are triggered by their corresponding API calls.                                                                                                                                     |
| Preauthorization | A bank preauthorization for a specific total amount over a specific period. No funds are transferred immediately, but the funds' availability is verified. This preauthorization must be fulfilled by one or more Capture transactions. |