Hello,
Welcome to Microsoft Q&A!
Is this data correct?
If there is no error code, then the extended data should be correct.
If so, could you please help us understand how to retrieve data using this campaign ID?
What kind of data do you want to get using the code? The code on the document is just used to get the custom campaign ID only if the customer clicked your URL with the embedded campaign ID. You could check the campaign ID to know from which URL the customer clicks and installed your app.
If you are looking for the data about how many conversions from your URL which embedded campaign ID, please go and check the Acquisitions report.
Besides, please note that this only works for customers on Windows 10. Customers using other operating systems can still follow the link to your app's listing, but data about those customers' activities will not be included.
Thank you.
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.