Error: There was an error sending your trade offer. Please try again later. (8)

[maruo34]

I'm trying to send a trade, but this error occurs. In what cases can this happen?

var tradeLink = url.parse(trades[key].user_trade_link, true);
                offers.makeOffer({
                    partnerAccountId: tradeLink.query.partner,
                    accessToken: tradeLink.query.token,
                    itemsFromMe:  [
                                    {"appid":730,"contextid":2,"amount":1,"assetid":"10084166636"},
                                    {"appid":730,"contextid":2,"amount":1,"assetid":"9994955518"},
                                    {"appid":730,"contextid":2,"amount":1,"assetid":"9994950194"}
                                ],
                    itemsFromThem: [],
                    message: config.domain
                }, function(err, response) {
                    if (err) {
                        console.log(err); 
                    } else {
                        changeStatusTrade(trades[key].uid,1); 
                        AcceptMobileOffer(trades[key].uid);
                    }
                });

[andrewda]

(in the future, please ask questions on the node-steam-forums repository, per #121)

Here's a description of the error you're getting: https://steamerrors.com/8

Some parameter you're sending to Steam isn't right. Try logging your tradeLink.query.partner and tradeLink.query.token to make sure they're correct. Another possible source of error could be that you're specifying an amount in the item objects – that isn't necessary for basically anything besides Spiral Knights Currency so try removing that. Also, itemsFromThem is not needed if it's just empty, so you should be able to remove that.