01The destination market decides the language
Machinery documentation has to reach the operator in a language they actually read. This is a market-access requirement, not a preference — equipment can be held up over documentation that is otherwise complete.
02Safety terms are defined, not chosen
Terms used in safety instructions map to specific wording in the governing standard. Translating them freely — even accurately in a general sense — breaks the link between your documentation and the standard it is supposed to demonstrate conformity with.
03Interface and manual drift apart
An MES or SCADA screen and the manual describing it are usually translated as separate jobs, often at different times. The operator then reads one term on screen and another in the manual, which is exactly when a procedure gets performed wrong.