Empty XML nodes incorrectly serialized/deserialized

[christopherseeley]

Seems like this zeep issue is impacting Ad Manager:
mvantellingen/python-zeep#923

Specifically, video line items with an empty requestPlatformTargeting. Reading one of these and sending it unchanged in an updateLineItemsRequest fails with NotNullError.NULL @ targeting.requestPlatformTargeting

[aebenw]

@christopherseeley Is there any update on this? I am experiencing this same issue.

My job is fetching line items and pushing them back up, this property is not changed though yet I'm getting this error.

[christopherseeley]

As a workaround, you can explicitly set an xsi_type for these line items and zeep will correctly serialize it:

line_item['targeting']['requestPlatformTargeting'] = {
            'xsi_type' : 'RequestPlatformTargeting'
        }

For background, an empty <requestPlatformTargeting/> node gets deserialized to None instead of the RequestPlatformTargeting wrapper object. The workaround coerces zeep to serialize it back as:
<requestPlatformTargeting></requestPlatformTargeting>.