Hi , 

I assume Problem is interlinked to  Implementation question asked on the DTM forum : http://help-forums.adobe.com/content/adobeforums/en/marketing-cloud-forum/activation.topic.html/foru... 

As, It is very clear that on click of a Product Recommendation you are capturing the Sku_Id of the recomended  product So it would be good to capture the value in a conversion variable say : eVar2=%Recommendation-prod-Sku-Id%  on click of a recommendation item. Also, Please note that that it will also be required to set setting for eVar2 in Adobe Analytics Admin tool - "Allocation Type" : Most Recent  & "Expire After" : Purchase event.

Hence when someone buys  a Product after the clicking on a recommended product we can associate the eVar2 & product variable with Orders metric.

Hence in Report & Analytics we have to break down conversion variable eVar2 with products variable and associate Orders metric with it thus we will get to know that After clicking a recommended product what All products have actually been puchased.

Thanks & Regards

Parit Mittal