The wording is that when a professional accountant intends to use the output of technology in the course of undertaking a professional activity, the accountant “shall determine whether the use is appropriate for the intended purpose”. Compare what that asks for. The Part 2 provision asks what steps are needed to discharge a preparation duty; this one asks whether the use is appropriate at all, which is a gate rather than a calibration. The placement explains why. Section 320 is Professional Appointments, and its sub-headings run from the general through changes in professional appointment to using the work of an expert, then using the output of technology, then other considerations. There is no sub-heading about accepting engagements as such — but the section’s subject is the appointment, which is why the duty falls due when a practice decides what it will do for a client rather than when a file is being prepared.
320.11 A1 lists eight factors, and one differs from its Part 2 counterpart by a single phrase that is doing real work: the oversight factor reads the firm’s oversight rather than the employing organisation’s. That is not tidying. A practice’s oversight of a tool is usually firm-wide while the engagement is not, so a tool approved at firm level may be quite unsuitable for a particular client’s circumstances, and the firm-level approval reads to the person on the engagement like an answer to a question it was never asked. The second distinctive point is that the accountant’s position within the firm bears on whether they can obtain the information needed to make the determination at all. In practice the person using the tool is frequently not the person who can find out how it works, and the Code makes that positional fact part of the ethical judgement rather than an excuse for it — the same asymmetry Article 26 addresses by placing duties on the deploying organisation.
Reading the duty at the appointment rather than at the file changes what a practice has to do with it. A determination that a use is appropriate for an intended purpose can be made once, for a class of engagement, and revisited when either the tool or the purpose moves — which is far more workable than a fresh judgement per deliverable and is the only version a small practice can actually operate. What it cannot become is a firm-wide statement that the tool is approved, because the determination is about the use and not about the tool. The nearest analogue elsewhere in the corpus is the decision at the front of an engagement about what the work will and will not cover, settled before anything is done rather than after.