Let’s take a look with an example from the Cronus Data. This is Sales Order 101005 from Cronus Canada Inc. Here we see the dimensions for the Line, the header has the same dimensions set.
If you are using RTC and previewing certain reports you probably will run into this error. “An error occurred during local report processing.” The Hidden expression for the textbox ‘……’ contains an error: The query returned no rows for the data set. The expression therefore evaluates to null.