Spelling beats everything else
Officials do not read your file as a story; they match it against another record. So the small stuff decides the outcome. One spelling of a name, one form of a date, one version of a place, used consistently across every sheet. Where two of your own papers disagree, say so at the start and let the translator handle it openly instead of silently choosing one.
The parts people leave out
The second family of errors is omission. Reverse sides get forgotten because they look blank until you tilt them. Marginal notes get treated as scribble. Annexes referred to by number are left in the drawer. An official French translation in Glasgow describes what is on the paper, so anything missing from the scan is simply absent from the file that arrives in Bangui.
- Photograph both sides of every sheet, even the ones that look empty.
- Include any annex the main document refers to by number.
- Send the passport page so name spelling can be matched to it.
Timing and cost, without surprises
The last two mistakes are about planning. Work is quoted at £25 a page from the scan, so a bundle trimmed before the count is a bundle that costs less. Standard turnaround is 2–4 business days and express is 24–48 hours. Fix the deadline first, then decide the route, rather than paying for speed you did not need.