10 AP Controls to Fix After a Recovery Audit

1. Strengthen vendor master governance

Many duplicate payments start with poorly controlled vendor masters.​

• Enforce a single owner, approval rules, and de‑duplication checks for new vendor creation.

2. Tighten duplicate‑invoice checks

Standard ERP checks can be too simple.​

• Add logic that looks across vendor, amount, date, and reference, not just invoice number.

3. Formalize credit memo handling

Unapplied credits are a frequent finding.​

• Create a process to age, review, and apply credits, with clear escalation for old balances.

4. Align PO and non‑PO spend policies

Non‑PO invoices often bypass pricing and term checks.​

• Require POs for defined spend types and implement extra review for non‑PO invoices.

5. Standardize freight and surcharge validation

Freight and accessorial charges need clear rules.​

• Build reference tables and simple checks so AP can quickly see if charges are within tolerance.

6. Document and track rebates and discounts

Rebates should be visible, not buried in emails.​

• Maintain a central register of rebate agreements and automate reconciliations where possible.

7. Improve tax coding guidance

Mis‑taxed items show up repeatedly in audits.​

• Provide purchasing and AP with clear taxability guides and decision trees for key categories.

8. Introduce exception dashboards

Recovery findings show which vendors and categories cause most issues.​

• Turn these into simple recurring dashboards that monitor exceptions monthly.

9. Formalize vendor‑statement audits

Statement reconciliations identify credits and unbilled invoices.​

• Build an annual or semi‑annual statement audit program for top vendors.

10. Close the loop with training

Controls fail if people don’t understand them.​

• Use findings to train AP, procurement, and tax teams with real, anonymized examples from your own data.

By applying these changes after an audit, organizations move from recovering past errors to preventing future ones.