Question on ISO-639:1988

[Anthony Hoang]

Håvard Hjulstad (ISO 639 Project Leader),

I'm working with EAN.UCC, a standards community for the global Retail & Consumer Manufacturing industry.  In our XML messaging standards, we have specified ISO-639:1988 as the official code list for specifying language.  I see that your publication of the language codes specify 2 lowercase alpha characters.

As a B2B trading community, should we be enforcing that only lower case characters be used?  Have you faced issues where a community implements both lowercase and uppercase characters?  In the case that both lowercase and uppercase are used, is there a preferred best practice between the two?

Thanks in advance for your help,

Anthony Hoang
Functional Architect, WorldWide Item Management

WorldWide Retail Exchange
625 North Washington Street
Alexandria, VA 22314
[main: 703.234.5100]
[fax: 703.234.5200]
[direct: 703.234.5151]
[email: ahoang at wwre.org]
[aol im: AnthonyWWRE]

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