{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/eci_flag",
  "title": "eci_flag",
  "type": "string",
  "minLength": 1,
  "maxLength": 255,
  "pattern": "^[0-9A-Z_]+$",
  "description": "Electronic Commerce Indicator (ECI). The ECI value is part of the 2 data elements that indicate the transaction was processed electronically. This should be passed on the authorization transaction to the Gateway/Processor.",
  "enum": [
    "MASTERCARD_NON_3D_SECURE_TRANSACTION",
    "MASTERCARD_ATTEMPTED_AUTHENTICATION_TRANSACTION",
    "MASTERCARD_FULLY_AUTHENTICATED_TRANSACTION",
    "FULLY_AUTHENTICATED_TRANSACTION",
    "ATTEMPTED_AUTHENTICATION_TRANSACTION",
    "NON_3D_SECURE_TRANSACTION"
  ]
}