Three departments. Three sales numbers. Which one is right?

A label like “sales” is not a complete definition

Does it mean orders placed, orders paid, goods shipped or revenue after refunds? Does it include tax or delivery charges? Which date decides the month? Two careful people can produce different totals if those choices are different.

Several totals can coexist

Here is one simplified example using the same measurement basis and a defined period.

Illustrative example, not a reconciliation of every possible accounting or payment event. Real systems may also differ in tax treatment, timing and other rules.

The totals alone do not prove someone made a mistake. They may describe different stages. The useful task is to name those stages and show the bridge between them.

Give the important number a short instruction sheet

You do not need a large technical document to start. For each disputed metric, record a few concrete rules.

• What business question does the number answer?
• What is included and excluded?
• Which date and time zone determine the period?
• Which source provides it, and how current is it?
• Who is responsible for explaining a discrepancy?

Fix one disagreement before adding more charts

Choose a number that repeatedly delays a decision. Trace it to the source, compare the rules and agree on a definition. Keep alternative views where they serve a real purpose. A useful report makes the differences understandable and gives the team a stable basis for discussion.