Payment and Transaction Support Fundamentals Questions

Covers customer facing payment and transaction issues and the operational knowledge needed to investigate and resolve them. Topics include payment flow basics, interpreting failed transaction and gateway error codes, declined payments, refunds and reversals, chargebacks and dispute handling, payment method compatibility, privacy and compliance considerations, and criteria for escalation to payments or finance teams. Candidates should know what information to collect, how to validate transaction state, and basic fraud awareness.