Need an RFC checker API to screen suppliers against SAT's 69-B blacklist automatically
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We do exactly this — weekly batch screening of 800+ supplier RFCs. Our RFC checker API provider (found on apipull.com API Hub) returns detailed 69-B status including the specific SAT publication date when an entity was added. This is important because there's a legal distinction between invoices received before vs after the presumption date.
The API returns four possible 69-B states: definitivo, presunto, desvirtuado, and no_listado. For 69-B Bis it's similar — definitivo_bis means confirmed acceptance of fictitious invoices. We flag presunto for investigation and definitivo for immediate payment hold.
Batch endpoint accepts up to 500 RFCs per call. For 600 suppliers, it's two calls running in parallel — results back in under 15 seconds total. We run this every Monday morning via a cron job.
Important point from the legal side: make sure your RFC checker API covers 69-B Bis as well, not just the main 69-B list. The Bis list (added in 2020 reform) flags companies that used invoices from EFOS. Some providers only check the main 69-B and miss this secondary exposure risk.
Also consider the opinión de cumplimiento — a negative opinion doesn't mean they're on 69-B, but it does indicate tax compliance issues (unpaid taxes, pending declarations). Some of our clients require a positive opinion before issuing purchase orders above a certain threshold. A good RFC checker API should include this in the same response to avoid a second call.
Our company works with over 600 active suppliers in Mexico and we need to implement an RFC checker API to automatically screen them against SAT's Article 69-B blacklist. This list contains taxpayers detected issuing fictitious invoices (EFOS — Empresas que Facturan Operaciones Simuladas). If we accept invoices from any entity on this list, our own tax deductions could be disallowed by SAT.
Currently, our accounts payable team manually checks new suppliers on SAT's website before approving them as vendors. But there's no ongoing monitoring — once a supplier is approved, nobody checks again unless there's a specific concern. This is a compliance gap: a supplier could appear on the 69-B list months after we started working with them.
What we need from an RFC checker API:
Our compliance officer needs a weekly report showing all suppliers with their current 69-B status. If any supplier changes from clean to "presunto" or "definitivo," we need an alert within 24 hours so we can freeze payments and investigate.
We're a mid-size manufacturing company without a large dev team, so the RFC checker API needs to be straightforward to integrate. Our ERP is SAP with some custom ABAP. We'd likely build a middleware service in Node.js that handles the API calls and pushes alerts to our Teams channel.
Budget is not the primary concern — compliance penalties for accepting invoices from EFOS entities can be 10-20x the invoice value. We need reliability and completeness over saving a few cents per query. What RFC checker API providers have you used for ongoing supplier monitoring?