IPA: /ˌoʊvərˈdɒk.jʊ.ment.ɪd/
KK: /ˌoʊvərˈdɑːkʌmentɪd/
Describing something that has been recorded or detailed more than necessary.
The project was overdocumented, making it hard to find the essential information.
Overdocumented → It is formed from "over-" (meaning excessively) and "document" (from Latin "documentum", meaning a lesson or proof). The word "overdocumented" means excessively documented or having too many documents related to something.
Think of being 'excessive' ('over-') in providing 'proof' or 'lessons' ('document') — that's why overdocumented means having too much documentation.
No commonly confused words.