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> The only way that Theo can send the exact same string to a > bunch of servers > is if he knows that the string works on all those servers. > One way he might > know that is if he knows that they've agreed to a common > profile. But, > there's no way that he's going to get a single string to work on an > arbitrary list of servers. None. Stop trying. Going back over Theo's original proposal - I'm not even sure that it would solve this anyway. As I understand it, it is the proposal that server might return something "close" to what was requested rather than an error. However, even if we allow this, given an arbitrary list of servers some might do something which even Theo wouldn't regard as useful or handleable by his client, and some might be written by Mike and Rob, so would just return an error. More seriously, we are straying onto metasearch requirements territory here. I suspect that one of their requirements and a reason I suspect that might give for not considering SRU/SRW is that they do expect a single string to work on an arbitrary list of servers! Matthew