HTTP Error 412 - Precondition failed
I ran a query yesterday which generated 14 records:
http://neren.rets.paragonrels.com/ret...
I re-ran the query today which generated the following message:
Server Error 412 - Precondition set by the client failed when evaluated on the Web server. The request was not completed due to preconditions that are set in the request header. Preconditions prevent the requested method from being applied to a resource other than the one intended. An example of a precondition is testing for expired content in the page cache of the client. CheckUpDown
Why did the Web server fail the 'Precondition' specification sent by the client system?