shell> curl -X DELETE --header 'If-Match: "_Y2g6wFq--_"' --header 'accept: application/json' --dump - http://localhost:8529/_api/document/products/104162
HTTP/1.1 Precondition Failed
content-type: application/json; charset=utf-8
etag: "_Y2g6wFm--B"
x-content-type-options: nosniff
{
"error" : true,
"code" : 412,
"errorNum" : 1200,
"errorMessage" : "precondition failed",
"_id" : "products/104162",
"_key" : "104162",
"_rev" : "_Y2g6wFm--B"
}