Display information message based on user selection in output screen
My requirement is to display an alv list report and in the report output i have placed a checkbox column and when i select the required document number and hit the preview button which i have placed in the report that should get exported to a text file.
Now everything is working fine, and now i have to set a message type that when the user selects the same checkbox for the second time and hit preview button it should display a message saying that already printed. How can i achieve this.
Please refer screen shot for proper understanding.