Disapprove a proposal:

Click the Disapprove button in the proposal footer. When disapproved, the proposal will no longer be a valid submission document; it will not be returned to the aggregator for corrections, nor will it continue in workflow. To return a proposal to the aggregator, use the Reject button. Once Disapproved is depressed, a confirmation window will appear; enter the reason for the disapproval and then click “OK” to complete the action. Otherwise click ‘cancel.’