Security catalogs love control IDs. Finance partners care about whether numbers are complete, accurate, and cut off in the right period. Mapping is the bridge. Without it, a financial auditing app for cybersecurity control evidence becomes a museum of screenshots.
Start from the assertion, not the tool
Pick one assertion — say completeness of user access for financially relevant systems. List the controls that actually support it this year. Leave out controls that only satisfy an internal framework tag. Your inventory should be short enough to discuss in twenty minutes.
Write the one-sentence link
For each control, draft a single sentence: “Quarterly privileged access review supports completeness of authorized users for payment posting.” If you cannot finish the sentence, the control may belong elsewhere — or need redesign.
Store the map where both teams look
Put the assertion map next to the evidence packets, not in a private security wiki. When auditors ask why a ticket export matters, you point to the sentence, then the dated pull. That is the habit we practice in Control Evidence Mastery Week 1.