This is the 13608th most frequent Russian word.
недостаточного
Insufficient.
Here, 'недостаточного' is used as an adjective to describe the deficient amount of time available.
У нас недостаточного времени, чтобы закончить проект.
We have insufficient time to finish the project.
In this sentence, 'недостаточного' describes the inadequate extent of control in the production process, functioning as an attributive modifier.
Продукты низкого качества — это результат недостаточного контроля на производстве.
Low-quality products are the result of insufficient control at the production.
'Недостаточного' is used to denote the inadequate degree of knowledge, acting as a qualifier of 'level' in the construct.