Report data mismatch issue with Data Export API !!!

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Name of affected component: Data Export API

Name of related library and version, if applicable (e.g. Java, Python,
HTTP, Objective-C, etc.):

Issue summary:
We have an issue with the data retrieved using Data Export API. The report data 
is not matching with the data from Data Feed explorer 
(http://code.google.com/apis/analytics/docs/gdata/gdataExplorer.html) and 
Google Analytic interface as well.

We got some clue about data mismatch from Google documentation that the data 
might be getting sampled. But with debugging our code, we are getting 
containsSampledData value as false in Xml document response from Export API. 
According to Google documentation, they mentioned that  "Google Analytics 
calculates certain combinations of metrics and dimensions on the fly and to 
return the data in a reasonable time, it processes only sampled data.".  We are 
filtering the data with the dimension "ga:adDistributionNetwork".

Question 1: Can anybody let us know what are those certain combinations of 
dimensions and metrics which may lead to sampling?
Question 2: Even if we get containsSampledData value as false in the xml 
response the data is showing incorrectly. What might be the reason for this 
issue?

Please shed some light on this issue.

Steps to reproduce issue:
1.
2.
3.

Expected output:
What do you expect to see after performing the above steps?

Actual results:
What do you actually see after performing the above steps?

Notes:
Provide any additional information which might be useful here. Feel free to
attach screenshots or sample code which demonstrates the issue being
described.

Original issue reported on code.google.com by sbga.2...@gmail.com on 20 Oct 2011 at 10:56

grazies / analytics-issues

Report data mismatch issue with Data Export API !!! #160