Cannot perform mutations that set nullable fields to `null`

[nnattawat]

I could not find the way to update bid_modifier of campaign_cirterion to null

When I use the following code to update campaign_criterion's bid_modifier, it works when I provide a number value. However, I cannot set it to null.

const resource = new GoogleResources.CampaignCriterion({
    resource_name: ResourceNames.campaignCriterion(CUSTOMER_ID, CAMPAIGN_ID, CAMPAIGN_CRITERION_ID),
    bid_modifier: null,
})

const results = await customer.campaignCriteria.update([resource])

I have tried to set it to null via Google Ads REST API endpoint directly without this lib and it works. Not sure is the an issue with the lib?

I use v10.0.2 of this lib.

[anjith-sm]

we are getting same issue as well.

[wcoots]

@nnattawat @anjith-sm This is one of the main failings of this library. We are unable to discern between nullable and non-nullable fields, and therefore by default we do not allow fields to be set to null. In the case of bid modifiers there is a work-around. Setting a bid modifier to 1 has the same effect as setting it to null. There will be a difference in the Google Ads UI, but the effect on an ads account is the same.

[anjith-sm]

@WillCooter Thanks for responding. I'm assuming this can't be fixed and will continue to behave the same in future versions as well?

[wcoots]

@anjith-sm For the time being this will remain an issue. A fix would have to involve compiling a list of resource attributes that can be null, and adapting the whole API including the parsing methods. Unfortunately this is not something that either myself or @kritzware have time to do at present due to our other commitments at Opteo. However it is certainly something that we would like to fix in the future