title: ErrorCode
type: string
pattern: '^[1-9]\d{3}$'
description: >-
  The API data type ErrorCode is a JSON String of four characters, consisting of
  digits only. Negative numbers are not allowed. A leading zero is not allowed.
  Each error code in the API is a four-digit number, for example, 1234, where
  the first number (1 in the example) represents the high-level error category,
  the second number (2 in the example) represents the low-level error category,
  and the last two numbers (34 in the example) represent the specific error.
example: '5100'