How can I use adwords api to set portfolio bidding strategy in v201705?

[la...@lockon-vn.com]

I have read the document and I found that the biddingStrategyConfiguration does not support changing biddingStrategyId. How can I do it alternative? Thank you.

[Sreelakshmi Sasidharan (AdWords API Team)]

Hi lavan, 

The biddingStrategyId gets created at the time of BiddingStrategyService ADD operation and this Id can be used to reuse an existing portfolio bid strategy (For example, to use an existing portfolio bid strategy for a campaign, update the campaign's biddingStrategyConfiguration with the strategy's ID). If you want to create a new PortfolioBiddingStrategy and use that while creating a campaign, please check this sample in Java. Samples in other languages can also be found here. 

Could you explain your usecase as to why you want to modify the biddingStrategyId? If you have SOAP logs that might explain what you are trying to do, please share that as well. 

Thanks,
Sreelakshmi, AdWords API Team