The change request management APIs add, remove, and list activities and
retrieve change request descriptions.
The change request management APIs are:
Add Activity (QFVADDA) adds an activity to the specified change request description.
List Activities (QFVLSTA) retrieves a list of activities from a qualified change request description.
Remove Activity (QFVRMVA) removes an activity from the specified change request description.
Retrieve Change Request Description (QFVRTVCD) retrieves either general change request description information, or information pertaining to a single activity within the change request description.