When you provide a service that involves looking after someone's money or property, you must be careful and skilled. You need to do what a sensible person would do in the same situation. This means you have to exercise care, diligence, and skill, just like someone who is prudent and experienced in providing the same service would do. You can find more information about this by looking at the Financial Markets Conduct Act 2013 and the changes made by the Financial Services Legislation Amendment Act 2019.