I am trying to find out why some contracts like an anc has to be registered at the deeds office and others not. Does a contract that is registered at the deeds office carry more weight than one signed on the kitchen table and locked away in a safe? What kinds of contracts have to be registered?

Maybe legislation prescribes that a certain type of contract has to be registered, but what is the reasoning behind it?

Anyone here who can assist me? I will really appreciate it.