Title
Conversion program (XPRA) for upgrade of IS-M <= 4.01 to IS-M >= 4.02

Purpose
This program selects the Cancelled indicator for all billingdocuments of any billing category that have been cancelled completely.

Prerequisites
The program should be run during the upgrade. It can be run when thesystem is down but not during productive operation.
This program can be run any number of times. However, it only updatesbilling items that have not been processed.