ios - Receiving error stating that one of the params in my httpRequest is not defined -

what i'm trying take whatever query user types itemsearch field, ping ebay's database, , return categoryid results. upon testing however, i'm receiving following error:

[9067:3603] error: uncaught error: can't set params if there query parameter in url (code: 141, version: 1.2.18) 

removing quotes around params didn't fix problem, , feeling it's because i'm not formatting params in order take in value objective-c code. appreciated!

my cloud code structured so:

parse.cloud.define("ebaycategorysearch", function(request, response) {           url = 'http://svcs.ebay.com/services/search/findingservice/v1?security-appname=*app id goes here*';          parse.cloud.httprequest({             url: url,             params: {              'operation-name' : 'finditemsbykeywords',               'service-version' : '1.12.0',               'response-data-format' : 'json',               'callback' : '_cb_finditemsbykeywords',              'itemfilter(3).name=listingtype' : 'itemfilter(3).value=fixedprice',              'keywords' : 'request.params.item',                // other params            },             success: function (httpresponse) {             // deal success , respond query },             error: function (httpresponse) {                 console.log('error!!!');                 console.error('request failed response code ' + httpresponse.status);             }        }); }); 

and call function within ios app so:

- (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender {     if (sender != self.nextbutton) return;     if (self.itemsearch.text.length > 0) {          [pfcloud callfunctioninbackground:@"ebaycategorysearch"                            withparameters:@{@"item": self.itemsearch.text}                                     block:^(nsnumber *category, nserror *error) {                                         if (!error) {nslog(@"successfully pinged ebay!");                                         }                                      }];       }      // new view controller using [segue destinationviewcontroller].     // pass selected object new view controller.  } 

the error message tells wrong.

you have defined url

url = 'http://svcs.ebay.com/services/search/findingservice/v1?security-appname=*app id goes here*'

but contains query string (the bit after "?"), error message.

you need set url url = "http://svcs.ebay.com/services/search/findingservice/v1"

and add

"security-appname" : "*app id goes here*"

to params dictionary