Specifies the campaign the request context must match in order for
the feed item to be considered eligible for serving (aka the targeted campaign).
E.g., if the below campaign targeting is set to campaignId = X, then the feed
item can only serve under campaign X.
Namespace
https://adwords.google.com/api/adwords/cm/v201809
Field
TargetingCampaignId
xsd:long
The ID of the campaign to target.
This field is read only and will be ignored when sent to the API for the following Operators: REMOVE.