Hello,

When you have multiple endpoints configured in the portal and endpoint B uses dynamic values from endpoint A, the the data on demand functionality doesn't work for tables that need endpoint B. Tables derived from A get the data on demand just fine. The exception message says: "OnDemand execution failed for data source '<datasource>' table '<table>' was not executed”

I encountered this in a customer environment and then tried to replicate it locally in my sandbox setup. To my surprise, the data on demand worked in my sandbox. However, I had an older version of TX installed. I updated to the latest version on my local laptop and then encountered the exact same problem. This would suggest that it’s a bug in the new version. 

My version number for TX is 6848.1.