Inactivity Penalty

 Players inactivity is monitored in-game and being dead or inactive for approximately two minutes disqualifies the player from either the end-of-mission reward or the end-of-rotation reward. This event is highlighted with the message: “Not Eligible Due To Inactivity”. In addition, any affinity sharing and focus generation is halted until player activity resumes. The player is not considered inactive if he or she is standing in the extraction zone. Any gathered resources, credits, blueprints, etc. are not affected.

Mechanics
The penalty is triggered by the player not moving more than ~5 meters for 2 minutes, regardless if the player is killing enemies or not.

Code of Conduct
Being AFK on public missions is considered a Code of Conduct violation. Proof of inactivity can be sent to the Warframe Support team. Offending players are subject to a warning and then suspensions.