Transaction types

The following table describes the transaction types in the merchant hub.

Transaction type	Name	Description
PA	Pre-Authorisation	Reserve (or block) a payment amount on the customer's card. To register a card, typically, this would be for a small amount between `0.01` and `0.99`, which you should not capture.
CP	Capture	Capture a pre-authorised amount to credit the merchant account.
DB	Debit	Debit the customer account and credit the merchant account.
RF	Refund	Credit the customer account with an amount that is less than or equal to a previously approved payment.
CB	Chargeback	The customer has received a refund directly from the issuer.
RV	Reversal	Reverse the reservation of a pre-authorised amount.
RDR	Rapid Dispute Resolution	Refund of a payment to prevent a future chargeback.
R1R	Rapid Dispute Resolution Reversal	Reversal of an RDR
CBR	Chargeback Reversal	Reverse a chargeback, for example, if a refund was issued after a chargeback was made.
CB2	Pre-arbitration/ Chargeback2	Repeat a chargeback because the issuer did not accept the merchant's challenge.
RG	Registration	Register a card for the customer's order. The amount of this transaction is `0`.
SD	Scheduled	Scheduled in the gateway
CD	Credit	Credits the customer account and debits the merchant account.

See also Transaction results.

The following diagram shows the flow for transaction types and flags. The merchant hub flags transactions with the previous transactions on the left in the flow chart.

Transaction flow with transaction types and flags

The following diagrams show the transaction flow for disputes with or without Rapid Dispute Resolution (RDR) in more detail.