What is the purpose of a selector code?

The purpose of a selector code is to specify and help identify specific item variants within a system or database. This code facilitates the selection process by providing a standardized method for categorizing and distinguishing between different versions or types of items.

In contexts such as product cataloging or inventory management, selector codes are particularly valuable as they allow users to efficiently locate and choose the exact variant they need. This is essential for ensuring accuracy in orders, inventory assessments, and data management.

While the other options involve important concepts such as contractor selection, budget limits, and building regulations, they do not align with the primary function of a selector code, which is focused on the identification and selection of specific item variants.