Choose 407 if the core purpose is structured skills development with supervised training outcomes. Choose 400 if you’re being brought in for a short, defined, highly specialised task where the business can’t reasonably source that skill locally in time. The quickest decision method is mapping: your goal (training vs specialist deliverable), your evidence strength, start date pressure, and your longer-term pathway plan.

Both visas fail when the story looks like a normal job. For 407, prove structured learning (modules, supervision, assessments, measurable outcomes). For 400, prove specialist delivery (project scope, deliverables, urgency, why you’re uniquely qualified, and why local sourcing isn’t viable). Your documents must show purpose, structure, and an end-point — not just “they need staff”.

Common gaps include generic training plans (Subclass 407), vague project statements (Subclass 400), unclear timelines, weak supervisor/sponsor capability evidence, and missing proof of your prior experience that matches the proposed activity. Decision-ready packs are specific: week-by-week training (Subclass 407) or deliverable-by-deliverable project plan (Subclass 400), plus evidence that the workplace can genuinely deliver what they’re claiming.

Treat timing like a project plan. If your course completion evidence is pending, you don’t want to lodge with a weak narrative or missing critical documents, but you also don’t want to create a gap that harms work plans. The practical approach is aligning your expected completion letter date, current visa conditions, intended work start date, and any travel needs before choosing whether 407/400 is the right interim step.

Neither visa automatically equals PR, but both can build evidence if planned well. From day one, keep role alignment evidence: supervisor references, detailed duties/activity logs, outcomes achieved, and proof your work/training matches your target occupation. If PR is the goal, your training plan (407) or specialist project scope (400) should be designed to support — not conflict with — your future pathway.

Changes are where people get unstuck. If your real activity no longer matches what you presented, you can create compliance risk or trigger refusal issues later. The practical move is to document changes early, keep the activity aligned to the original purpose (training outcomes for 407; defined specialist deliverables for 400), and adjust the structure properly rather than quietly drifting into “general work”.

Yes—name differences can lead to delays or requests for more information, so it’s best to fix it up front with a clear identity trail. Use consistent spelling wherever possible, add a short explanation for any variation, and include supporting evidence such as bio-data pages from your old and new passports plus any official name-change document (for example, a marriage certificate or change-of-name certificate).

If you don’t have a formal change document, or you need to clearly connect the different versions of your name, you can include a Commonwealth statutory declaration explaining that the names refer to the same person and why the variation exists, backed by the supporting documents. This kind of clean, consistent identity evidence helps both visa applications progress more smoothly.