shell> curl -X DELETE --header 'If-Match: "10229"' --dump - http://localhost:8529/_api/document/products/10225 HTTP/1.1 412 Precondition Failed content-type: application/json; charset=utf-8 etag: "10225" { "error" : true, "code" : 412, "errorNum" : 1200, "errorMessage" : "precondition failed", "_id" : "products/10225", "_key" : "10225", "_rev" : "10225" }