The following events can be raised by the iOS SDK. transactionCreated Returns data about the transaction object when the transaction was successfully created.
{
  "transactionID": "8724fd24-5489-4a5d-90fd-0604df7d3b83",
  "status": "pending",
  "paymentMethodID": "17d57b9a-408d-49b8-9a97-9db382593003"
}
transactionFailed Returned when the transaction encounters an error.
{
  "transactionID": "8724fd24-5489-4a5d-90fd-0604df7d3b83",
  "status": "pending",
  "paymentMethodID": "17d57b9a-408d-49b8-9a97-9db382593003"
}
cancelled Returned when the user closes the payment sheet without creating a transaction. generalError Returned when the SDK encounters an error.
{
  "Gr4vy Error: Failed to load"
}