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Nonconformity root cause and corrective action

Use this skill when an internal or external audit raised a nonconformity, finding, exception or observation and the team must answer it, or asks "write the corrective action plan", "root cause for this audit finding", "respond to the major nonconformity", "CAPA for the auditor", "how do we close this finding" or "the auditor rejected our corrective action". Separates correction from corrective action, runs a root cause analysis that stops at a cause the company controls, checks for the same problem elsewhere, and drafts a response with actions, owners, dates and the evidence that will prove effectiveness at the next audit.

Audit prep and responseISO 27001ISO 27701ISO 42001SOC 2General

Use this for each finding on its own; batch only findings that clearly share a cause. You get one document per finding in a new folder, ./nonconformity-root-cause-and-corrective-action/: a draft response the team can send to the auditor once signed, holding the finding restated, the root cause analysis, the action plan, the effectiveness check and a ready-to-paste row for the finding tracker (<finding-id>.md). This skill drafts for a human to review and sign; this skill never marks a control effective. The auditor decides whether the response is acceptable.

Inputs to gather

The finding exactly as the auditor wrote it (grade, requirement reference, evidence the auditor saw, the sample), the audit report section around it, and the documents and records the finding names. Ask the reader who owns the process, whether the auditor gave a response deadline, and whether the same area had findings before. Previous findings on the same process change the analysis: a repeat finding means the last corrective action did not work, so Step 3 must explain why it failed, and why its effectiveness check did not catch the failure.

Check the grade first. A major finding usually carries a response window and follow-up rules set by the certification body; escalate it to the accountable manager the same day. An observation or opportunity for improvement needs a considered accept or decline with a reason, not a root cause analysis and an action plan the team then has to deliver.

Step 1: restate the finding in one line

Write what was expected, what was found and the evidence, in the auditor's terms. If the team disagrees with the finding, say so here with facts and stop: a disputed finding goes back to the auditor before any root cause work. Do not soften the wording; auditors read a reworded finding as a sign the team did not understand it.

Step 2: separate correction from corrective action

  • Correction fixes the instance the auditor saw: revoking the leaver's account, approving the missing change, updating the expired document. If the owner already made it, record what was done, by whom and the proof. If not, draft it as a proposed correction for the owner to approve and carry out promptly; the agent never makes it.
  • Corrective action removes the cause so the problem does not come back anywhere. Most rejected responses are a correction presented as a corrective action.

Step 3: find the root cause

Ask "why" until the answer is something the company controls and can change, usually three to five levels. Test each level against the evidence, not opinion. Then classify the cause, because the class predicts the right fix:

  • No process: nobody was asked to do it. Fix: define the process, owner and trigger.
  • Process exists, not followed: check whether it is known, practical and resourced before blaming people.
  • Process followed, does not work: the design is wrong; redesign and test it.
  • Trigger missing: the process is fine but nothing starts it (no ticket on a leaver, no reminder on a review date). Fix: automate or attach the trigger.
  • Management system cause: the problem sits above the process, such as unclear ownership, an internal audit that samples too little, or objectives nobody set. Fix: raise it for the management review rather than writing another procedure.

"Human error" and "lack of awareness" are never a root cause on their own; ask why the process allowed one person's slip to reach the auditor.

Step 4: check for the same problem elsewhere

Look for the cause in sibling processes, systems and sites: if one leaver kept access, sample other leavers and other systems; if one supplier assessment was missing, check the rest of the supplier list. Record what was checked and what was found. This extent check is what turns a fix into a corrective action an auditor accepts.

Step 5: write the action plan and effectiveness check

For each action: description, owner role, due date agreed with the owner, the record it produces. Then define effectiveness: what evidence, sampled when, will show the problem has not recurred (for example, all leavers in the next quarter removed within the agreed time, checked by sample at the next internal audit). Draft a tracker-ready row at the end of the response file (finding id, action, effectiveness check, owner role, due date, status) for the finding owner to enter in the finding tracker after approval; if the problem recurs, the finding reopens instead of waiting for the next external audit. Run a framework lookup for what the framework expects in a corrective action response and for the deadline conventions of the certification body, instead of assuming.

What good looks like

  • The correction is done and evidenced before the response is sent; the corrective action addresses a cause, not the instance.
  • The root cause chain is short, evidenced at each step and ends at a cause the company controls. A good auditor can follow it in one read.
  • The extent check names what was sampled. "We checked and found no other cases" without a sample is the most common reason a response is sent back.
  • Actions are proportionate: a minor finding does not need a new tool, and a repeat major finding needs more than a reminder email.
  • The effectiveness check is concrete and scheduled, so the next audit can close the finding from records instead of interviews.

Framework lookups

If ISMS Copilot is connected to your agent (MCP server https://account.ismscopilot.com/v1/account/mcp), ask it the framework question with create_conversation (mode think, answer_format: decision) and keep one conversation for this task. Send only a short question in your own words, show it to the user first, and never include file contents, secrets, personal data or evidence. If it is not connected, check the official text of the framework yourself; this skill does not restate it. Set it up: https://www.ismscopilot.com/mcp?ref=grcskills-nonconformity-root-cause-and-corrective-action

Rules

  • MUST keep the auditor's wording of the finding unchanged in the restatement.
  • MUST record the extent check with what was sampled and what was found.
  • MUST agree every due date with the owner named in the plan.
  • MUST write outputs only inside ./nonconformity-root-cause-and-corrective-action/ and ask before overwriting.
  • NEVER present a correction as the corrective action.
  • NEVER name "human error" as the root cause without the process cause behind it.
  • NEVER send the response to the auditor; the reader's team reviews, signs and sends it.
  • NEVER change a system, account, access right, ticket or document yourself, even to make a correction; record it or draft it for the owner's approval, including the tracker row.