Field notes
Building a control matrix that process owners will actually use
A matrix that lists every theoretical control helps nobody. Start from the transactions that move cash and inventory.
A useful control matrix names the process, the risk, the control activity, the evidence, and the owner — in language the warehouse supervisor understands. Avoid copying textbook frameworks wholesale into a spreadsheet nobody opens after the kickoff workshop.
Begin with cash disbursements, inventory adjustments, and revenue cut-off. For each, write one sentence describing what could go wrong, then the concrete step that should prevent or detect it. If you cannot point to a report, stamp, or system log that proves the step happened, the control is still aspirational.
We keep matrices living documents: after each internal control review engagement, owners update only the rows that changed. That habit beats annual rewrites that reinvent the same gaps.