21.27 Release Notes (Jul-08, 2021 Release)

Bug Fix  

Title: Sponsored Product Click Parameter Issue.  For Sponsored Product Requests where no userId is present, the "cuserid" parameter passed in the sponsored product click beacon was passed as the string "null" instead of an empty value.
Summary:  Provide that empty value instead of the "null" string.
Jira:  https://jira.richrelevance.com/jira/browse/ENG-20616
Complete: Y
Customer Facing: N