Formula auditing and dependency tracing

Read this Formula auditing and dependency tracing example

Start with the business need: Investigate why a reported control total changed. Read each argument, reference, field, or control in the example before copying it into a larger model.

Formulas → Trace Precedents

The Formula auditing and dependency tracing mistake to catch

A formula that returns the expected value for one test case may still contain a broken range or hard-coded constant.

Formula auditing and dependency tracing: what Excel is actually doing

Formula auditing uses trace precedents/dependents, Show Formulas, error checking, Evaluate Formula, and independent controls to understand calculation paths.

Your desk challenge for lesson 94

Trace one critical output to its source, record the path, and test it with a changed input.

• Make the existing calculation correct before optimising it.
• Reduce repetition with clear names and reusable logic.
• Trace, test, document, and protect the final workbook.