Õ: ühik selles tähenduses on eksitav

olemus
talitluslik ja/või struktuuriline koostisosa
organisatsiooni, süsteemi, andmete vm koostises

näiteid
Wiktionary:
5. an organized group comprising people and/or equipment
He was a member of a special police unit.
7. (US, military) any military element whose structure is prescribed by competent authority, such as a table of organization and equipment; specifically, part of an organization
15. (commerce) an item which may be sold singly.
We shipped nearly twice as many units this month as last month

https://en.wikipedia.org/wiki/Strategic_business_unit

https://en.wikipedia.org/wiki/Military_organization#Commands,_formations,_and_units

https://en.wikipedia.org/wiki/Protocol_data_unit

https://csrc.nist.gov/glossary/term/application_protocol_data_unit