KS3U017W At least one command variable contains an empty data value. Do you want to continue?

Explanation
			
				At least one empty value is detected that is attached to
				a substitution variable. This situation is often a
				result of a variable not being resolved by the selected
				data (in other words, the variable attribute does not exist in the
				underlying data table). Attention is needed, but an
				empty value is not always a problem.
			
		
User response
			
				Verify if the data is intended by using the "show data"
				button. Correct the attribute name if needed.