How long stay valid status at LE?

[parkhyunjoon]

Hello, I made program that manages user’s ssl.
First, I issued user’s certificate with LD01.
And later tried to issue one more certificate with LH01 with same account key.
But, then LE’s response is

{
  "identifier": {
    "type": "dns",
    "value": "www.cryptotalk.org"
  },
  "status": "pending",
  "expires": "2016-11-16T09:34:23.904116043Z",
  "challenges": [
    {
      "type": "http-01",
      "status": "pending",
      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/Wfp3vOVPpsJD5ojRyQ7JO9VcwNFdaQ2x0kPm9uexgvY/333503876",
      "token": "B6Fp_5nD-LzJuygnXh-xTDj1_BLkWxUQJb-F8DrWaBQ"
    },
    {
      "type": "dns-01",
      "status": "pending",
      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/Wfp3vOVPpsJD5ojRyQ7JO9VcwNFdaQ2x0kPm9uexgvY/333503877",
      "token": "UdElYhpB-n2HzLTFQc0-nT_D2a_N0J9_h7QHV6IhKv0"
    },
    {
      "type": "tls-sni-01",
      "status": "pending",
      "uri": "https://acme-v01.api.letsencrypt.org/acme/challenge/Wfp3vOVPpsJD5ojRyQ7JO9VcwNFdaQ2x0kPm9uexgvY/333503878",
      "token": "w9Nc1JJOhCWNgKjyIRfXwf-prV8dhwGQVe3IEUdTggQ"
    }
  ],
  "combinations": [
    [
      2
    ],
    [
      1
    ],
    [
      0
    ]
  ]
}

Maybe I suggested when I successed to issue certificate by certain way, I can issue the only way.
Then, How long stay the valid status at LE?

[serverco]

with

@parkhyunjoon

"expires": "2016-11-16T09:34:23.904116043Z",

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