Lowe's Code M20: M20 merchandising allowance deduction (Tracking Code M20 / DM######P).
Lowe's Tracking Code M20 (paired with DM + 6 digits / DM + 6 digits + P) is a contractual merchandising/infrastructure allowance withheld from supplier remittance. Like other Lowe's allowance codes, line-item detail must be requested through LoweLink ticketing to audit against your vendor agreement.
Why Lowe's issues Code M20.
- M20 allowance rate was applied to excluded POs or calculated on gross rather than net receipts
- Duplicate deduction alongside an off-invoice discount
Documents that win.
- Signed Lowe's Vendor Agreement showing M20 allowance terms
- M20 line-item backup report from LoweLink support
- Purchase order and invoice summary
How to dispute it.
Find remittance line for Code M20 in Vendor Inquiry / Ticketing in Lowe's Vendor Gateway (LoweLink). Note the PO, invoice number, and claim amount.
Collect and verify documentation: Signed Lowe's Vendor Agreement showing M20 allowance terms, M20 line-item backup report from LoweLink support, Purchase order and invoice summary. Ensure piece counts and timestamps match.
File dispute claim package via Lowe's AP Portal selecting claim reason for Code M20 (M20 merchandising allowance deduction (Tracking Code M20 / DM######P)) and attaching all verification documents.
Monitor claim status in Lowe's AP Portal until approved (30-60 days). Approved credit memo will apply to a future settlement remittance.
Lowe's allows suppliers to dispute AP deductions in Vendor Inquiry for up to 18 months after the last activity date. Check your remaining filing window with our free Dispute deadline checker.
Source: Lowe's supplier guidance · Verified by Laxmi Narayan · 2026We audit remittances, assemble proof documents, and handle end-to-end Lowe's deduction recovery on pure contingency. We'll check whether yours is disputable, free, in 72 hours.