Does ACME have CSR standard?

{u'detail': u"Error parsing certificate request: asn1: structure error: tags don't match (16 vs {class:0 tag:13 length:45 isCompound:true}) {optional:false explicit:false application:false private:false defaultValue:<nil> tag:<nil> stringType:0 timeType:0 set:false omitEmpty:false} certificateRequest @2",
 u'status': 400,
 u'type': u'urn:ietf:params:acme:error:malformed'}

It seems that my csr contents have problem.
Such as these field:

/ST
/L
/O
/OU
/CN

We all know LetsEncrypt only issue the DV certificate .

Does LetsEncrypt care about these fields above ?

Or does LetsEncrypt only validate the CN field in the csr file?

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A post was merged into an existing topic: What format of csr parameter in ACME protocol