Invalid Parameter

Indicates that the server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

Common Causes

• A required field is missing or empty.
• A field has the wrong type or format (for example, a string where a number is expected).
• A value is outside the allowed range or list of supported values.

{
  "message": "Validation error",
  "error_code": "INVALID",
  "param": "card.expiry_year"
}