Apple only allows 100 values for campaign_ID. You will need to decide how to use them wisely. Take the lead with Smadex.
Now that Apple has officially announced the full SKAdNetwork implementation [...]
Smadex algorithms are designed to perform better for SKAdNetwork based attribution.
By limiting the information send through SKAd postbacks, Apple is opening a new chapter in digital advertising. The only scenario where IDFA will still be available is when the user provides consent to both the publisher app and the advertiser’s app.
Post App Tracking Transparency (ATT) will change how mobile attribution [...]
While we await the release of the App Tracking Transparency [...]