Here is the problem detail response:
{"type":"urn:acme:error:rateLimited","detail":"Error creating new cert :: Too many certificates already issued for: xxxxxx.tld","status":429}
What’s interesting though, is that this message must not be surfacing all the details of the limit that was hit because I only get this error when the test runs on my CI server, but when I run it from my development box (with the same domain), it still works fine. So I suspect this must be some limit per IP address or address range perhaps?
Let me know if you need the specific domain in order to troubleshoot or dig into it.