error after linking tables with references (also can't drill into the reference)

[dfk1988]

I'm rebuilding an app I made a while back. I've linked my "Sku" column in a couple tables to a reference table with unique IDs for each entry. Dereferences are working smoothly, but I'm getting this error exclamation image in my tester window to the right. I'm sure I forgot something but I can't figure out what. It's also not allowing me to "drill" into the sku and see other entries with the same sku. Any ideas? I'm not seeing any errors in the error log. 

[Steve · Accepted solution]

https://www.googlecloudcommunity.com/gc/forums/searchpage/tab/message?q=yellow%20triangle

[dfk1988]

thanks,  just what I was looking for!