Issues and errors

Issues can arise during a transaction that require the merchant to review and either accept or reject the risk associated with the issue. Any payment transaction can trigger a signature, offline, duplicate, or partial payment issue. The point of sale (POS) must:

• Examine the response to determine if there are any issues.
• Notify the merchant and provide options to either accept or reject the risk associated with the issue. If there are multiple issues and the merchant rejects even one of the issues, the payment must be voided.

The following sections provide information about:

• Specific payment-related issues:

  • Check for duplicate payments
  • Handle offline payments
  • Handle partial payments
  • Handle signatures

• Device issues and API errors:

  • Handle communication issues
  • Status code and error reference