This activity is used to acknowledge the Input Service Distribution. This can be done via the command Acknowledge in the Input Service Distribution page.
Input Service Distribution proposal should be in the Distributed status.
As a result of this activity, the Input Service Distribution status changes to Acknowledged status, and users will not be able to edit any distribution line in the Distribution tab when the proposal is in the Acknowledged state.
Unacknowledged command will get enabled upon acknowledging the distribution.