Now that I have retrieved my words to exclude, I would like to add them to a specific adgroup.
When I do the test, I see the keyword neither on the console (it puts me "undefined") nor in the section "Keywords to exclude".
// Selection de la campagne dans Ads
var campaignName = "G|SRC|FR|Brand";
var campaignsIterator = AdsApp.campaigns().withCondition("Name = '" + campaignName + "'").get();
var campaignAds = campaignsIterator.next();
Logger.log("Campagne : "+campaignAds);
//-------------------------------------------------------------//
// Selection de l'adgroup de la campagne
var adgroupName ="dk test";
var adgroupIterator = campaignAds.adGroups().withCondition("Name = '" +adgroupName+"'").get();
var adgroupAds = adgroupIterator.next();
Logger.log("Adgroup : "+adgroupAds);
//-------------------------------------------------------------//
// insérer un MC en negatif exact dans la campagne
Logger.log("test1 : "+adgroupAds.createNegativeKeyword('[test]'));