Need functional help

What is the relationship between Work Centre (in Basic Module) & Asset Code (in Fixed Asset) ? How to define the following hierarchy alo Company --ABC Company Ltd | |__ Plant – ABC ( Virtual Item) | |__ Area – XYZ Area ( Virtual Item) | |__ Tag – 101-AB Primary Reformer ( its a asset) | |__ Equipment – 101-AB-PM Pump – 101-AB-MT Motor should I’ve to define Primary Reformer as Work Centre or Asset? Need help urgently, Thanks in advance