public static String getErrMsg(String errCode) {
        int codeVal = NumberUtils.toInt(errCode, Integer.MAX_VALUE);
        return valueOf(codeVal).errMsg;
    }
Error Code class

Used to identify different types of errors
inlong-sdk/dataproxy-sdk/src/main/java/org/apache/inlong/sdk/dataproxy/common/ErrorCode.java