The below soap request when fired using soap ui returns a valid response.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:v11="https://bingads.microsoft.com/CampaignManagement/v11">
<soapenv:Header>
<v11:DeveloperToken>DeveloperToken</v11:DeveloperToken>
<v11:CustomerId>CustomerId</v11:CustomerId>
<v11:CustomerAccountId>AccountId</v11:CustomerAccountId>
<v11:AuthenticationToken>Auth Token</v11:AuthenticationToken>
</soapenv:Header>
<soapenv:Body>
<v11:GetGeoLocationsFileUrlRequest>
<!--Optional:-->
<v11:Version>2.0</v11:Version>
<!--Optional:-->
<v11:LanguageLocale>en</v11:LanguageLocale>
</v11:GetGeoLocationsFileUrlRequest>
</soapenv:Body>
</soapenv:Envelope>
However when I try to fire the same request by populating the details in Bing Ads API , I am seeing "Authentication token expired. Please renew it or obtain a new token." Below is the code that I am using -
var getGeoLocationsFileUrlRequest = new GetGeoLocationsFileUrlRequest(null, "Auth Token", "Account ID", "Customer ID", "Developer Token", null, null, "2.0", "en");
CampaignManagementServiceClient client = new CampaignManagementServiceClient();
var getGeoLocationsFileUrlResponse = client.GetGeoLocationsFileUrl(getGeoLocationsFileUrlRequest);