A customer can grant you an exception on a document that may or may not need signed off. Follow these steps to do so. 

Step 1: Sign in and go to My Tasks, you will see a task to document exception (Sign off Req). Or you can go to the Received Supplier Documents then Exceptions tab under Supplier Approval. 

 Or 

Step 2: To view select View

Step 3: View details, once done close by selecting X 

Step 4: Now select again, then choose Sign Off

Step 5: Review & then select Sign Off

Step 6: The status will now revert to green