Part / Item "Alias" or "Alternate ID"

When it comes to a PART definition in Aras, does anyone have any recommendations as to the concept of "Alias" or "Alternate ID". My use-case is that when a PART is defined in my world, there are multiple "alias" or alternate ID's that are used in different world areas. So, Part number xxx-123456 is its' global definition but in Europe it's known as yyyxxxzzz. This issue is related to legacy codification of parts along with ERP limitations or features.  A Bill of Material could contain yyyxxxzzz or  xxx-123456 and still be valid.

If you add the idea of "context" then when I'm in the US Context I always see xxx-123456, when in the EU context, I see yyyxxxzzz.

Any ideas?