Hello @KarthikaSPillai , there is lot’s of lookup files available in the ONE Dekstop Tutorials project:

There are also plans on how to build them (under 03 Building lookup file). Is it enough like this? 

I dont have :(

@KarthikaSPillai It’s under the ext folder → lkp folder, see my previous screenshot 

Could not view the sample data:
 

@KarthikaSPillai Can you try some other? I am getting the same error, but only for this one, let me report it to our product team. Nice catch! :) 

I think the Ref Join lookup is a special lookup used for the Referential Join step and is a bit special that you can’t see from the ONE Desktop.

Other standard lookups should be fine?