Questions fields list missmatch

Current fields list of question item:

"owner"
"author"
"id"
"title"
"description"
"answer"
"questionOf"
"relatedItem"

Spec describes slightly another list of fields:

data.question.id
data.question.author
data.question.title
data.question.description
data.question.date	
data.question.answer
data.question.questionOf

Spec: https://confluence-sale.prozorro.org/pages/viewpage.action?pageId=50364622