shell> curl -X PUT --header 'If-Match: "_XiAwL3S--_"' --data-binary @- --dump - http://localhost:8529/_api/document/products/10742 <<EOF {"other":"content"} EOF HTTP/1.1 412 Precondition Failed x-content-type-options: nosniff content-type: application/json; charset=utf-8 etag: "_XiAwL3O--_" { "error" : true, "code" : 412, "errorNum" : 1200, "errorMessage" : "precondition failed", "_id" : "products/10742", "_key" : "10742", "_rev" : "_XiAwL3O--_" }