noun
problem area; area of concern
Refers to a domain, field, or aspect where problems exist or are likely to arise. Often used in academic, technical, or analytical contexts.
この研究の主な問題領域はデータの信頼性です。
The main problem area of this research is data reliability.
プロジェクトの初期段
It is important to identify problem areas in the early stages of a project.