Problem

Each day, as the invoices from each division are processed, the Control-M/Analyzer database is updated with divisional totals for invoice amounts and costs. However, even when daily invoice amounts are balanced and meet the daily criteria, there can be problems that show up only over a period of time. For example, it may be valid for a division to have a very small amount invoiced on a given day. However, if this situation continued for a week, this would be very abnormal.

INTRAC has two problems in this situation:

• No one at INTRAC has ever defined weekly "reasonableness" criteria for invoice and cost amounts.
• The INTRAC executives suspect that from time to time there are problems with both the volume, or total dollar amount, of invoices, and with the profit margins of each of the divisions.