[AccessD] Primary Key Best Practices

That's what I thought.

Susan H. 

Well, just like a MailItem, a ContactItem has a property called "EntryID"
which is of type String. For MailItems this looks like some kind of GUID...

00000000AF9B53E7CCFAD01199D500805FD4C8DA07001D7828CDB8350747AFE9D69E0E90DA1F
00001D15892D000034C8A2AB1EF3564CB0D64DB6AFFDD5C2000009BA2DB10000

And though I have not checked this out, I suspect the EntryID of a
ContactItem is of the same form.