3.4 Replying to messages
The tester can only reply to a comment if the planner has previously specified this. If the planner has given the option to reply, there is a reply button below the message history, which the tester can use to write his reply. If the planner has not enabled the reply option, you will recognize this by a info text at the very bottom stating "The reply option was not given for this message". Each comment can be replied to only once at maximum.
If the planner has not released the reply option, you can tell by the information displayed at the bottom “The reply option was not given for this message”.