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Gabrielle OliveraGabrielle Olivera 

Trouble with Event Monitoring Analytics Trailhead. Get Warning "The dataflow was completed, but the LookupSingleValue node didn't augment any columns."

When I try to run the Analytics for CEO app I get the following warning: "The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values. The dataflow was completed, but the LookupSingleValue node didn't augment any columns. Either the node didn't find any matches, or a join key contains only null values."
Did I miss a step?
Best Answer chosen by Gabrielle Olivera
SandhyaSandhya (Salesforce Developers) 
Hi,

Refer below salesforce help article for information on this warning.

https://help.salesforce.com/articleView?id=000268828&language=en_US&type=1
 
 
Please mark it as solved if my reply was helpful. It will make it available for other as the proper solution.
 
Best Regards
Sandhya