Pedimento Reconciliation for IMMEX: What to Check Before the Numbers Drift
The pedimento is the customs declaration that records what entered Mexico and under which regime. For an IMMEX operation it is also a hinge: it is where the customs world and your internal inventory are supposed to meet. If the pedimento does not tie cleanly to your PO, your receipt, and your part master, the gap does not stay at customs — it spreads into Anexo 24 and, eventually, into balances you cannot close.
This is a working checklist for trade compliance, broker coordinators, and the ERP people who feed them data.
Reconcile at the line, not the header
Most reconciliation failures happen because people check the pedimento at the summary level — totals look right — and never compare it line by line to the rest of the file. The drift lives in the lines.
For each pedimento line, you want to confirm it agrees with the commercial invoice, the PO, the part master, the receipt, and the unit of measure. One stray unit conversion can turn a clean import into a permanent reconciliation headache.
| Field on the pedimento line | Tie it to | Common failure |
|---|---|---|
| Part / description | Part master and PO | Generic customs description, no link to your part number |
| Quantity | PO and warehouse receipt | Quantity matches the invoice but not what was received |
| Unit of measure | ERP unit | Pedimento in kg, ERP in pieces, no conversion recorded |
| Value | Commercial invoice | Invoice revised after the entry, pedimento not updated |
| Regime | Intended IMMEX treatment | Entered under the wrong regime for the intent |
A short example
Educational scenario: This is a fictional example based on common IMMEX workflows. It does not describe any specific company.
The import pedimento lists a coil of material in kilograms. The ERP receives it in pieces, because production consumes discrete pieces. The commercial invoice, to make things interesting, lists it in sets. None of these is wrong on its own. But unless the conversion logic — kilograms to pieces to sets — is written down and agreed, the same coil shows three different quantities in three records, and reconciling its eventual export becomes guesswork.
The unit-of-measure rule
If you do one thing after reading this, make it this: for every part, define and document one conversion path between the customs unit, the ERP unit, and any invoice unit. Conversions that live in a coordinator’s head are fine until that coordinator is on vacation during a review.
What to check first
- Are you reconciling pedimentos at the line level, or only checking totals?
- Does each line tie to a PO, invoice, receipt, and part master?
- Is there a documented unit conversion for parts that enter in a different unit than the ERP uses?
- Are corrections to invoices or quantities reflected back on the pedimento record?
Questions for your broker
- How do you classify and describe our parts on the pedimento, and can it carry our part number?
- When an invoice is corrected after entry, what is the process to align the pedimento?
- How should we handle parts that enter in a different unit than we consume?
Before you escalate
If a pedimento line cannot be tied to your internal records, or if unit conversions are inconsistent across recent entries, raise it with your customs broker before the next wave of imports compounds it. Bring two or three specific lines that do not reconcile, with the PO, invoice, and receipt attached. Specific lines get fixed; “our pedimentos seem off” gets a shrug.
Interactive tools and visuals
Data reconciliation aids
Use these visuals and the self-test to locate quantity, unit, BOM, scrap, warehouse-transfer or pedimento mapping gaps.
Confirm any finding with your broker, advisor or qualified IMMEX specialist.
Related reading
- Anexo 24 Explained in Plain English: Inventory Control for IMMEX Operations
- ERP, Warehouse, Broker, and Anexo 24 Mismatch: A Practical IMMEX Scenario
- Temporary Imports Not Discharged Under IMMEX: What the Risk Usually Means
- IMMEX Checklist for ERP Teams: Part Numbers, BOMs, Units, and Broker Data
- IMMEX risk and data reconciliation index
Sources & further reading
- SAT — Foreign trade portal — Customs declaration and regime reference.
- SNICE / Secretaría de Economía — IMMEX — IMMEX program context.
- Diario Oficial de la Federación — Primary source for rules and updates.
- Trade.gov — Mexico Country Commercial Guide — Documentation overview for importers.
Disclaimer
This article is for educational purposes only. It is not legal, tax, customs, or accounting advice. IMMEX, import, VAT/IEPS, Anexo 24, Anexo 31, NOM, Padrón, RFC, and customs-broker obligations depend on the facts of each operation. Confirm requirements with your Mexican importer, customs broker, tax advisor, or qualified IMMEX specialist before shipping or changing your process.