How do I add an Entity Use Code to a Customer in Dynamics AX 2012?

Overview

You need to associate a customer with an existing Entity Use Code.

Dynamics AX 2012

To associate an Entity Use Code to your customer:

Open Microsoft AX
Navigate to Administration
Locate AvaTax
Click the "+" sign in front of Setup
Click on Configuration Settings
Click on General Tab
Click on Entity\Use code mapping button
In the Entity\Use Code Mapping form do the following
Click in the Grid
Add new (Click on New Icon, Press Ctrl+N or Click File > New)
In the account Column, click the Drop Down button and scroll through the list to find the customer account you need to add. Click on that Account
In the Address Name column click the Drop Down and find the address that you want to use. Please note that this is the Address Name, you will not see the actual address.
In the Entity\Use Code column click the Drop Down and choose the entity use code you want to use
Click the Save Icon
Exit the form
Exit Configuration

Note: You may also access the Entity Use Code Mapping Utility directly using the following method:

You would then proceed from that point as in the instructions above.