View SQL for an insight limitations

[RADSr]

I have an aggregate table insight, it has measures, I'd like to view the SQL representation of the Incorta query but instead of that I view the message ( screen cap below ) helpfully telling me I must be using a listing or aggregate table and have at least one measure. 

What other limitations are there to being able to view SQL?   

[JoeM · Accepted solution]

@RADSr - I was able to get in front  of the right expert and they mentioned the following reasons:

• It has to be a listing table or an aggregated table
• All measures must have a proper query plan, one can validate using the query plan button
• Improper filters
• Empty measures
• Empty/invalid formulas/columns
• Unsupported filters
• Mixing aggregates and non aggregates in measure formulas is not allowed