olemus
kuhjunud eelseisvad tööd

Wiktionary:
3. an accumulation or buildup, especially of unfilled orders, unconsumed products or unfinished work
He went to work on Saturday to try to work through the backlog of papers on his desk.
Kyle purchased a new one despite having a backlog of video games that he haven't played.

näiteid
(i) tootenõuete ja lõpetamisele kuuluvate saaduste prioriteediloend
=
product backlog: a prioritized list of functionality which a product should contain
https://en.wikipedia.org/wiki/Product_backlog

(ii) järgmisel iteratsioonil väljatöötamisele kuuluvate tarkvara erijoonte loetelu
=
a sprint backlog: selected elements from the product backlog which are planned to be developed within that particular sprint

(iii) käsitluseootel materjal
https://en.wikipedia.org/wiki/Backlog_of_unexamined_patent_applications

https://en.wikipedia.org/wiki/Backlog_(academic_journals)