Appropriate response code if server wants to enforce conditional PUT/DELETE?

Hi,

(excuses if this is OT. OTH, the question might be relevant to HTTPbis)

is there an/what is the appropriate response code when a server wants  
the client to use an If-Match header on a PUT request but the client  
did not send one?


Thanks,
Jan

Received on Monday, 29 June 2009 11:31:05 UTC