Tracking key at BBVA
At BBVA, the tracking key has 24 characters and starts with «MBAN01». After that comes the operation date, in six digits, and a sequence; no spaces or dashes. It's the bank with the most searches of this kind, and also the one with the most confirmed receipts.
ImportantThese formats are confirmed against real receipts, but banks can change them without notice: they aren't official Banxico rules, just what's been observed.
Tracking key at Santander
At Santander, the tracking key has 30 characters: eight digits of date, the bank's code and the literal «TRAPP», followed by twelve more digits. If you see that literal on your receipt, you know it matches this format.
Tracking key at Banco Azteca
At Banco Azteca, the tracking key has between 19 and 20 characters: six digits of date, a block of twelve or thirteen digits, and a letter at the end. The same format applies to Baz and Elektra, which share Banco Azteca's code.
Tracking key at Mercado Pago
At Mercado Pago, the tracking key has 15 characters: the literal «CPO» followed by twelve digits, with no date embedded. Mercado Pago's receipt doesn't always show it in full.
With VerikoWith Veriko the key is read straight from the photo of the receipt, without you comparing it by hand against any format.
Tracking key at Banorte
Banorte is one of the most-searched banks in this guide, but its format isn't confirmed against a real receipt yet: there's no pattern to show for now. Once it's confirmed with enough receipts, this section gets filled in.
NoteIf your bank isn't listed here, that doesn't mean your key is wrong: every bank has its own format, and this list grows as more real receipts get confirmed.
How Veriko does it
Veriko reads the tracking key straight from the photo you upload. With it, it looks up the CEP with Banxico and gives you a verdict in about 10 seconds, with the date, the amount and the banks.
The difference is the effort per transfer. On the Banxico site you type in six exact details, including the key, and solve a security image, one lookup at a time. With Veriko the system reads the details, and if Banxico doesn't respond, the lookup can retry on its own.
| What you need | By hand on the Banxico site | With Veriko |
|---|---|---|
| Data | Six exact details, including the tracking key | The photo of the receipt, or the typed details |
| Hours | 9:30 to 23:00 | Any time, with automatic retries if Banxico doesn't respond |
| Volume | One transfer per lookup | Hundreds of payments in a file, or by API |
| Result | The CEP's PDF or XML | The verdict with date, amount and banks, and the CEP saved |
| Record | None: you keep it yourself | History, reports and alerts in your panel |
If you validate payments often, comparing the format by hand is the step that fails most. There's a free plan that never expires to try it, and the pricing page compares the paid plans.
Frequently asked questions
Why does the tracking key look different depending on the bank?
Each bank decides how to build the tracking key for its receipts; Banxico doesn't set a single format, only that one exists and identifies the operation. That's why BBVA, Santander and the rest print it differently, with their own length and their own literals.
Does the tracking key include the date?
At some banks, yes: BBVA, Santander and Banco Azteca embed the operation date inside the key. At others, like Mercado Pago, they don't.
What if my bank isn't on this list?
Your tracking key is still valid; its format just isn't confirmed against a real receipt yet, so it doesn't have its own section. The guide on the tracking key explains what it is and where to find it in general, regardless of the bank.
Does the tracking key change if I switch apps?
No. The key is generated by your bank as an institution, not by the app you use to view your receipt.
Where do I find the tracking key on my receipt?
On the receipt your bank gives you, almost always near the folio or the operation's reference number. The guide on the tracking key explains where to look in more detail.
Does the tracking key help track a transfer?
Yes: with it you can request the CEP on the Banxico site and confirm whether the payment settled. The guide to tracking a SPEI transfer explains the full steps, whether or not you know your bank's exact format.