A quick definition of affiliation order:

An affiliation order is a type of court order that determines who a child's father is and usually includes a direction to pay child support. It's used by governments to recover public funds spent on the child's welfare. An order is a written direction or command delivered by a court or judge, and it can be final or temporary. There are different types of orders, such as a restraining order, a visitation order, or a stop order in securities trading. An order can also refer to the conduct of business according to parliamentary law or the words in a draft directing one person to pay money to another.