We have been waiting for ESRI to solve this issue for a long time. Still, unfortunately, in EXB developer edition 1.17, ESRI mentioned that this issue has been solved: "You can enter a message to display when no data is selected or the chart is otherwise not displaying data." We tried to fill it out as requested, but unfortunately, this is not working.
Kindly advise, are there any additional steps to take after filling in the custom message?