I rewrote confusing payment failure

I rewrote confusing payment failure messages for a fintech app called FinPay.Problem: User see"Transaction declined: error 402" and don't know what to do. They abandon payment.My solution:

- Changed technical errors to human language: "Your card was declined. Check your card number or try another card"

- Added clear next steps: "Check funds, retry, or contact bank"

- Created 3 types: Failed, Success, and Help messages

- Made them friendly and actionableResult: Reduced user frustration and payment abandonment.