RoboTask forum

I am new to RoboTask and was hoping some could help.  I have a process where a message box will appear if there is no data to process, but if there is data to process different steps will have to be followed. 
What is the best way to handle this?

Your question is very abstract.
What process?

Maybe you have to create the additional task which watch for dialog window (error message) and stops the main task and next, closes the appeared dialog.
If dialog didn't appeared, the main task will work in normal mode.