shell> curl -X PUT --header 'If-Match: "_XG3z-l---B"' --data-binary @- --dump - http://localhost:8529/_api/document/products/10755 <<EOF {"other":"content"} EOF HTTP/1.1 412 Precondition Failed x-content-type-options: nosniff content-type: application/json; charset=utf-8 etag: "_XG3z-l---_" { "error" : true, "code" : 412, "errorNum" : 1200, "errorMessage" : "precondition failed", "_id" : "products/10755", "_key" : "10755", "_rev" : "_XG3z-l---_" }