In the module Messages you can only select messages in the overview with the status Final. If you cannot select the message, it is because:
- your message has the status Concept or Proof.
Change the status of the message to Final. This can done by using the drop down menu or the right mouse menu. Click on the option Change status. Select the status Final in the pop-up.
- your message is archived in the module Messages.
First restore the message to the overview. Use the drop down menu or the right mouse menu and click on Restore to Overview.