The most concerning translation error is sometimes a small shift that sounds entirely natural. Losing a word such as might or turning an observation into a definite result can change the attitude of the whole piece.
Check the weight of the meaning
Names, numbers and dates are a starting point. I then compare expressions of possibility, obligation and recommendation. Advice is not a rule, and an illustrative example is not lived experience.
If the original suggests considering an approach, a translation insisting that it must be adopted introduces a stronger decision. The grammar may be sound while the meaning no longer matches.
The original order is not mandatory
Natural English may require splitting a sentence or changing the information order. Those changes can preserve meaning more effectively than literal structure. Making the reader reconstruct an awkward sentence is not necessarily fidelity.
Reorganisation should not introduce new claims, however. Any added contextual explanation needs to be treated as a conscious adaptation and checked against the source.
Keep important terminology consistent
A small terminology record helps when key concepts, topic names or project roles recur across pages. The purpose is not to freeze every word, but to avoid giving the same important concept several inconsistent identities.
An English localisation review also includes surrounding navigation, forms and links. Translation extends beyond the article body.
Finish with a monolingual reading
After comparison, I read the English version independently. Does it sound natural, retain the same narrator and introduce the actual question clearly? If understanding still depends on consulting the original, editing is unfinished.
I regard an AI-assisted translation as material for editorial work on meaning and voice, not an automatically completed product.