1. If you consider that very few conversion types actually need the 90-day 
window:
First call the ConversionTrackerService, request all conversion types. Then 
determine the largest conversion window, which is in field 
ctcLookbackWindow. Note: if you also synchronize ViewThrough conversions, 
you should also consider viewthroughLookbackWindow!
You could now use that maximum instead of 90 days. It's not perfect, 
because the setting may change between syncs.

Another solution is request an account report, only aggregated to 
individual days first, and compare the conversions in that report with the 
contents of your local database - you should re-sync from the oldest 
discrepancy again.

2. You can use multithreading or multiple machines to request multiple 
reports at the same time. You can also use asynchronous communication, but 
not all libraries support that - at least the .NET library doesn't.


On Tuesday, May 30, 2017 at 7:55:11 PM UTC+2, Ryan Blecher wrote:
>
>
> My understanding is that the Conversion Window is finalized is at a max of 
> 90 days. Our application syncs reports nightly to account for the previous 
> day, but we need to account for conversion correction that take place much 
> further back than that. 
>
>    1. Are there better ways to do this than sync reports for the past 90 
>    days nightly and check if conversion counts are different each day? 
>    The discrepancy is most cases is < 1% and it seems inefficient to 
>    fetch data that is unchanged.
>    
>    2. Is there any way to bulk download reports for multiple users? ie. 
>    KeywordPerformanceReport for multiple campaigns.
>    or can we get all the necessary reports for an account at once?
>
>
>

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