Hi,
The v200909 version of the API only supports filtering by a single
campaignId:
http://code.google.com/apis/adwords/v2009/docs/reference-v200909/AdGroupService.AdGroupSelector.html
To use multiple campaignIds you need to use the v201003 version of the
API.
Best,
- Eric Koleda, AdWords API
Sending:
http://schemas.xmlsoap.org/soap/envelope/"; SOAP-
ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:tns="https://adwords.google.com/api/adwords/cm/v200909";>#