Similar thread is here: Adobe Analytics API - Adobe Experience League Community - 643303A few members have surfaced the same issue of having new fields "itemIds" and "values", with "s" on the end. @Gigazelle FYI regarding the other thread but I'm assuming you're already aware. 

Same for us, CC: @Jennifer_Dungan I created workspaces a long time ago, and some data engineers debugged the workspaces to get the JSON required to extract data withthe API. They use some python script to extract the workspace data - that failed over the weekend despite no changes to my workspace or...