What are the different transaction types?

Exchange: A single currency exchange between two currencies.
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Payments: An order for an outbound payment to a recipient. Note that if making a payment with exchange, you'll have both an exchange transaction and a payment transaction.
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Deposit: A sum received into an account via an inbound transfer.

Forward contract: A foreign exchange (FX) order booked to purchase at a specified price, on a future date. You can choose to either settle the full trade at the end of the contract or drawdown the contract early.

Drawndown: An order that is booked when you choose to settle some or all of your forward contract trade earlier than the agreed future date.

Card: A card payment to a merchant.

Card check: A merchant-initiated check on a card, to ensure that they've got the correct details and that the card is active.

Card refund: A refund from a merchant back to a card. For example, after a purchase has been returned.

‍Cash withdrawal: A cash withdrawal made with a card.
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ATM: instance of a card being used at an automated teller machine (ATM), but that didn't result in a cash withdrawal. For example, someone checking their balance.

Cashback: A cash withdrawal made as part of a card payment.

Chargeback: A charge that is returned after a customer successfully disputes a transaction on their account.

Unload: A transaction during which money is removed from a budget. For example, transferring funds to another budget.

Load: A transaction during which money is added to a budget. For example, receiving funds from another budget.

Other credit: A credit transaction that doesn't fall under one of the other credit transaction types.

Other debit: A debit transaction that doesn't fall under one of the other debit transaction types.