Message 12
Message
"this" entry was not a valid selection
Where, the italicized text represents text that varies based on the situation that caused the message.
Description
This is a general message that indicates that a selection ("this" ) is not valid. For example, sending the remote command :MTESt2:DISPlay ON
without a mask loaded results in the following error message:
Mask Display entry was not a valid selection
This message is displayed in the message area and is reported as a programming error message.