From: "Marc Cromme" <[log in to unmask]> > I might not be on the main stream of how others feel about this, but I > think it is no good idea to throw in a new error message because one > implementor wants it. I think that from our many years of developing diagnostics (Z39.50 and SRW) we generally believe: (1) we should avoid multiple diagnostics for the same condition; but (2) we don't need to establish that a particular diagnostic meets any "usefullness test"; there is no substantive harm in defining a diagnostic for just one implementor. --Ray