Does Running a Challenge on Staging Server effect Results/Outcome?

NOTE: values are not real (represents results of letsencrypts' staging server for a test ip)

So this isn't an issue per say; its more of not understanding how the response the client returns maps to TXT records (given that each DNS api has a slightly different implementation).

Reading through the README, I see this:

When using -t, each domain (primary and altnames) is authorised over standard output 
and input between the caller and acme-client as follows:

  (a). acme-client prints “challenge-type dns-domain token.thumbprint\n” (note the trailing newline) on 
        its standard output.

  (b). The caller performs any tasks to implement the challenge's response.

  (c). The caller writes the same three-field string and the newline to the standard input of acme-client.

This cycle repeats for each requested domain, then acme-client exits.

My question is:

Which of the 3 part string in (a) response corresponds to TXT VALUE ?

I have tried using:

all 3 parts combined (respecting the spaces between the 1st two and the period that joins the token and thumbprint)
only the token
only the thumbprint

None of the above work; instead returning errors that match this:

acme-client: transfer buffer: [
  { 
    "type": "dns-01", 
    "status": "invalid", 
    "error": { 
      "type": "urn:acme:error:unauthorized", 
      "detail": "Incorrect TXT record \"TChR2DfPtEOyWaxl750J4E_sJo97szwCVHq3PT5NfRU.LyF9F8lc51hP9u3aOG7Lwnt-3DnMV2MpLi0RgHGM-VA\" found at _acme-challenge.sub.domain.com", 
      "status": 403 
    }, 
  "uri": "https://acme-staging.api.letsencrypt.org/acme/challenge/LPRoT8sfbwpbQU99UXs10jI1VSn9HyhfIFDcvcDlo9Y/158596424", 
  "token": "2Q_pQKPWiun16FT60BGriRh1Tcb7fXrmOCOLOYXXTPc", 
  "keyAuthorization": "2Q_pQKPWiun16FT60BGriRh1Tcb7fXrmOCOLOYXXTPc.LyF9F8lc51hP9u3aOG7Lwnt-3DnMV2MpLi0RgHGM-VA" 
  }
] 
(590 bytes)
acme-client: bad exit: netproc(48): 1

I also ran dig -t txt _acme-challenge.sub.domain.com and confirmed got this results:

; <<>> DiG 9.10.6 <<>> -t txt _acme-challenge.some.subdomain.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1043
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;_acme-challenge.some.subdomain.com. IN  TXT

;; ANSWER SECTION:
_acme-challenge.some.subdomain.com. 3600 IN TXT  "RogJGpjq1B6_3EyvUzkBhWMS7SwodiInW3bwgsYPpss"

;; Query time: 48 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Sat Aug 11 15:29:18 EDT 2018
;; MSG SIZE  rcvd: 118

kristapsdz / acme-client-portable

Does Running a Challenge on Staging Server effect Results/Outcome? #53