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updatedAt: 2026-01-14T09:13:51.000Z
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# InitiateActionResponse.Error (Object)

Note: Currently, these fields are only available for MasterCard PSD2 transactions. For details refer to MasterCard document “Authentication Guide for Europe, Version 1.2 12 September 2019”

| Name                  | Description                                                                        | Type   | Length               | Required |
| :-------------------- | :--------------------------------------------------------------------------------- | :----- | :------------------- | :------- |
| **ReferenceNumber**   | System reference number for the error message.                                     | String | Up to 15 characters  | Optional |
| **ReasonDescription** | Used by the issuer for informational purposes.                                     | String | Up to 256 characters | Optional |
| **Description**       | A description of the error.                                                        | String | Up to 50 characters  | Optional |
| **Message**           | A message that can be used to display text to the cardholder on certain templates. | String | Up to 128 characters | Optional |