Publish to TestFlight using Fastlane from VSTS

Question

I'm trying to use the App Store VSTS extension to deploy a build of an app to TestFlight but something is failing at the authentication stage.

It seems to be related to the fact that iTunes is challenging for answers to the security questions for the account:

I'm not sure how to resolve this:

• Is this an issue with the account I'm trying to use?
• Is this an issue with how I have the service endpoint configured?

fastlane pilot upload -u ******** -i FrameworkDemoApp.Touch.ipa -q 466996 -r **** -a *****
--skip_submission true --skip_waiting_for_build_processing true

Login to iTunes Connect (********)

Service key is empty

/Users/vsts/.gem-cache/gems/fastlane-2.93.1/spaceship/lib/spaceship/two_step_client.rb:45:
in handle_two_step:` 
[!] Invalid 2 step response {"securityQuestions"=>{"questions"=>[{"id"=>134, "question"=>
"Where did you go the first time you flew on a plane?", "number"=>1, "userDefined"=>false},
{"id"=>136, "question"=>"What is your dream job?", "number"=>2, "userDefined"=>false}]},
"crResetEnabled"=>false,
"resetSecurityQuestionsSupportLink"=>"http://support.apple.com/kb/HT6170"}

Answer 1

This issues seemed to be caused because the Apple ID I was using didn't have two step verification enabled.

This isn't made clear in the VSTS documentation: https://docs.fastlane.tools/best-practices/continuous-integration/#use-of-application-specific-passwords-and-spaceauth