{
  "SUCCESS": "Success",
  "ERROR": "Error",
  "VALIDATION_ERROR": "Validation Error",
  "INTERNAL_SERVER_ERROR": "Internal server error",
  "NOT_FOUND": "Not Found",
  "UNAUTHORIZED": "Unauthorized",
  "FORBIDDEN": "Forbidden",
  "ALREADY_APPLIED": "You have already applied a referral code.",
  "INVALID_REFERRAL_CODE": "Please enter a valid referral code.",
  "REFERRAL_CODE_DELETED_ACCOUNT": "The referral code you entered is associated with a deleted account and cannot be used.",
  "RECEIPT_SENT": "Receipt sent successfully.",
  "BOOKING_NOT_FOUND": "Booking not found",
  "INVALID_REQUEST_TYPE": "Invalid request_type",
  "REQUEST_TYPE_REQUIRED": "request_type is required"
}