Expired authorization for DNS challenge

How long does DNS challenge remains valid?

I am getting the following error when performing a renewal via DNS-01 challenge. The DNS update took more than a week and so I suspect it's related to expiry of the challenge.

Challenge error: {
  "type": "urn:ietf:params:acme:error:malformed",
  "detail": "Expired authorization",
  "status": 404

I believe initially a challenge has a lifetime of 7 days. Once it was validated successfully, the expiry date will expand to 30 days.


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