This activity is used to indicate that the sub contract revision is undergoing an approval 
process. The status of the revision will be changed to Approval In 
Progress to indicate that it is currently undergoing approval.
Modifications to the sub contract revision lines or items will not be allowed when 
the revision is undergoing approval, unless the Update Allowed During Approval 
check box is selected on the sub contract revision. The purpose of this feature 
is to avoid 
changes being made to the sub contract revision after it has been approved by 
someone else. If changes are required, the sub contract revision must be set 
back to the Planned status by canceling the approval. 
The sub contract revision must be in the Planned status.
The sub contract revision is set to the Approval In Progress status.