What actions can I perform on transactions?

The following are actions that can be performed on eligible transactions using MyST. Use the links below to learn more:


A Re-Auth is a process where a new Authorisation can be performed using the same credit/debit card as a previous transaction.

  Click here to learn more.


You can process a full or partial refund for a settled transaction (with request type “AUTH”).

  Click here to learn more.


You can perform updates on a pending transaction (settle status “0” or “1”) using the “Update” option.

  Click here to learn more.

 Account Check

An Account Check allows a card/account to be validated by checking the customer’s account, address and security code values are valid and that it is acceptable to proceed with the transaction.

  Click here to learn more.

  Risk Decision (requires Protect Plus)

A Risk Decision request analyses the customer’s billing, delivery and payment details using a rule-based system to detect suspicious patterns in user activity. The system will assist you in making a decision on whether to process a customer’s transaction based on the perceived level of risk. Checks performed include:

  • The industry’s largest negative database.
  • Neural-based fraud assessments.
  • Tumbling or Swapping, where there is an unusual usage pattern in the card number, expiration date or customer details associated with a transaction.

  Click here to learn more.

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