Due to the API limitations of Google, XMP is unable to access conversions of Ad impression type (3.0 ARO conversions) automatically. Therefore, it’s necessary to obtain the conversion ID manually and enter it in the XMP.
The following is the way to check the conversion ID:
1. Click Tools and settings -> Conversions
2. Select the Ad impression conversion objective and click on Conversion Name
3. Locate“ctld=XXXXXXXX”in the URL at the top, and the numbers is the conversion ID