noun which may take the genitive case particle 'no'
the relevant; the said; the appropriate
Formal modifier used in legal, business, and official contexts to refer to a specific person, thing, or matter previously mentioned or under consideration. Often translates to 'the relevant', 'the said', or 'the appropriate' depending on context.
Please submit the relevant documents by tomorrow.
The identity of the said person has not yet been confirmed.
An evacuation advisory was issued to residents of the affected area.
The city sent a notice to the person concerned.
The accident occurred in the area in question.
Please check the regulations concerning the matter in question.
当該 is a formal bureaucratic term for 'the said/relevant', while 件 (くだん) is a literary word for referring back to something already mentioned.
当該 is a general formal word meaning 'the said/in question' that can modify any noun, while 同省 specifically refers back to a previously mentioned ministry.
当該 and 該当 share the same two kanji reversed, but 当該 is a no-adjective meaning 'the said/relevant' that modifies a noun, while 該当 is a verb/noun meaning 'to fall under/be applicable'.
当該 means 'the said/aforementioned' and modifies a noun (当該事項), while 本件 stands alone as a noun meaning 'this case'.
当該 is a formal modifier meaning 'the relevant/said' that identifies what is being referred to, whereas 当事 specifically implies being directly involved as a party in the matter.
Compound of 当 (this, the present) and 該 (corresponding, applicable). The combination creates a formal term for 'the relevant/said'.