Version 2002 is more specific as to appropriate values for certain attributes in <eadid>, setting as the defaults certain ISO standards for the codes for the country and name of the organization maintaining the electronic version of the finding aid, which is what the ead header is all about.   
The codes for the country are to be taken from ISO 3166-1, Codes for the representation of names of countries and their subdivision- Part 1:Country codes.
The identifier for the repository should conform to ISO 15511, Information and Documentation- International Standard Identifier for Libraries and Related Organizations.   In the U.S., the Library of Congress is the Maintenance Agency responsible for the assignment of such identifiers. 
Michael Fox
-----Original Message-----
From: Carol Bartels [mailto:[log in to unmask]]
Sent: Wednesday, October 16, 2002 1:46 PM
To: [log in to unmask]
Subject: <eadid>

To those who are in the know,


Will the content standard being created, CUSTARD, and or the soon-to-be- released EAD version 2002, have more guidelines on the creation of a unique <eadid>?  If so will it be similar to the ISAD(G) 3.1.1 Reference code(s)?


My work has me working on an <eadid> and a reference code for use in our new collections management system and they must be unique and different from one another.


Looking for a little guidance,