Error when trying to retrieve bid modifiers on campaign level

[mspier...@bol.com]

Hi,

I'm trying to get the campaign bid modifiers via the python library and the GoogleAdsService (v1) like the following:

q = ('SELECT campaign_bid_modifier.bid_modifier '
 'FROM campaign_bid_modifier '
 'WHERE campaign.id = %s' % campaign_id)
result = ga_service.search(customer_id, query=q)

But I get the following error:

[2019-03-19 12:53:39,426 - INFO] Request made: ClientCustomerId: xxx, Host: googleads.googleapis.com:443, Method: /google.ads.googleads.v1.services.GoogleAdsService/Search, RequestId: xxx, IsFault: False, FaultMessage: None

A similar request to retrieve the bid modifiers on ad group level works without a problem.

What is wrong here?

[googleadsapi...@google.com]

Hello,

The API request you made doesn't result in an error, rather an empty response. Can you please let me know the campaign ID you are trying to query on so I can check what the issue may be?

Thanks,

Anthony

Google Ads API Team

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[mspier...@bol.com]

Hi Anthony,

Thank you for clarification. There was no campaign bid modifier for this campaign indeed. 

I didn't realise that this message indicates an empty response. 

Thanks,

Manuel