# Understand the examples

Source: https://developer.avalara.com/products/crossborder/integration-guides/avatax-for-cdit/agt4025360273755/

Guide: AvaTax Cross-Border (Customs Duty and Import Tax)

# Understand the examples

Learn about examples for Core Requirements and Advanced Features to guide certification and usage decisions.

The examples in this section are broken out into Core Requirements and Advanced Features.

-   If you're attempting to get certified in just the Core Requirements for Customs Duty and Import tax, you can skip the Advanced Features examples section.
-   If you are not using AvaTax's item classification, then consider getting certified in the Advanced Features. In this case, go directly to the Advanced Features examples section. The examples in the Advanced Features section also include Core Requirement examples.