01
MED is not "PIX buyer's remorse"
The Special Refund Mechanism (MED) was created for specific situations related to fraud and operational failures, not as a generic refund button for dissatisfaction.
The seller's refund policy remains a separate process.
02
Keep evidence from the moment of purchase
Product, amount, time, IP when applicable, identification, communication, access proof, and delivery records help reconstruct the case.
For digital products, activation and usage logs can be especially useful.
03
Reconciliation speeds up response
If finance takes too long to link a PIX payment to order, customer, and product, the operational deadline gets harder.
Use consistent identifiers and event history to locate the transaction quickly.
04
Fraud and support need to talk
Some cases arrive through support first. Train the team not to promise outcomes before understanding the type of dispute.
A clear flow avoids contradictory answers between support, finance, and risk.
05
Learn from patterns
Group incidents by product, source, device, and behavior. A spike in one campaign or offer can reveal bad traffic, confusing messaging, or fraud attempts.
The goal is not only to respond to the case, but to reduce recurrence.
06
Bringing this into your operation
Document the full transaction flow from checkout start through approval, settlement, possible refund, and reconciliation. Mark which systems receive events and who owns exceptions. This simple map reveals dependencies that usually surface only when volume grows or a campaign scales suddenly.
Read by cohort and source whenever possible. Ticket size, payment method, installments, product, campaign, and affiliate can produce very different economics. A healthy average approval or chargeback rate can hide a segment that destroys margin and pushes CPA up.
07
Metrics worth tracking alongside the decision
Track attempts, approval, checkout conversion, AOV, refunds, chargebacks, net revenue, and payout timing. Connect those numbers to media CPA and ROAS. The goal is not the highest isolated metric, but turning purchase intent into net revenue with controlled risk and cash flow.
08
The takeaway
PIX MED refund cases require process, evidence, and reconciliation. Treat each incident under applicable rules and keep enough history to understand what happened.
The more organized the operation, the lower the cost of investigating and responding.
09
Is MED a chargeback?
No. Both involve dispute or refund, but they follow different mechanisms and rules.
10
Can a customer use MED for any refund?
That is not the purpose of the mechanism. Check current rules and your provider.
11
What records should you keep?
Transaction data, order, access/delivery, communication, and relevant events, respecting privacy and appropriate retention.