Hi Wmclendon,
External codes are set up in the External codes form and are associated with internal codes in Microsoft Dynamics AX. You create and maintain external codes in the specific forms that process the internal codes in Microsoft Dynamics AX. For example, both internal codes and external codes for item numbers are set up and maintained in the Item details form.
To create external codes, you must specify a code, a description for the code, and the value of the external code. You must also specify whether the code is an officially recognized standard code, such as EAN, ISBN, or ISSN.
You can create several external codes for the same item, account number, warehouse, unit, dimension, or currency. For example, the item number BR-12 might have one external code value that corresponds to a customer's item number and another external code value for its EAN number. If there are several standards for the same country code, you can enter the values according to those standards.
