Add/modifying device bid modifiers using AdGroupBidModifierService

[henry...@ly.st]

Hello,

I've been messing around with the AdGroupBidModifierService and wanted a simple way to add or modify device bid modifiers.

As stated in https://developers.google.com/adwords/api/docs/reference/v201702/AdGroupBidModifierService.AdGroupBidModifierOperation

If you try to ADD a criterion that already exists, it will be treated as a SET operation on the existing criterion.

So I went about using the ADD operator and tested it against an adgroup w criterion and w/o criterion.

When I try this in an adgroup that already has an existing criterion that I would like to modify I get BID_MODIFIER_ALREADY_EXISTS type error.

Am I doing something wrong or is this an API bug?

Currently using v201702, not the most recent release but the release notes for newer versions do not indicate a change that would solve the above.

Thanks in advance!

[Bharani Cherukuri (AdWords API Team)]

Hi Henry, 

That's right. If you perform an ADD operation to an existing criterion, the bid will be set according to the bidModifier value from the request. Could you share us the SOAP request and response logs, so I can take a look? Please use Reply privately to author option to share the details. 

Regards,

Bharani, AdWords API Team