Payment Service Degradation
Payment Service Degradation is a condition in which a payment service remains partly usable but performs below its expected quality, capacity, correctness,…
Glossary terms starting with P
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Payment Service Provider (PSP)
A payment service provider is an entity that provides payment services to users or merchants, including banks and specialized non-bank providers. Depending…
Payment Service Reliability
Payment Service Reliability is the ability of a payment service to produce correct, timely, durable, and recoverable outcomes consistently under expected demand…
Payment Services Directive (PSD2)
PSD2 is Directive (EU) 2015/2366, the European Union framework governing payment services, payment institutions, user rights, security, strong customer authentication, and access…
Payment Session
A payment session is a time-bounded interaction context created to complete a payment through a page, application, link, terminal, or API flow.…
Payment Settlement
Payment settlement is the transfer of settlement assets or account balances that discharges payment obligations between participants under defined rules. It follows…
Payment Settlement Layer
Payment Settlement Layer describes the architectural layer that manages the final transfer and recording of financial obligations between participants, providers, accounts, or…
Payment Single Point of Failure
Payment Single Point of Failure means a component, service, provider, person, credential, account, data store, or network path whose failure can stop…
Payment SLA
A payment service-level agreement is a contractual commitment covering defined aspects of a payment service, such as availability, response time, processing time,…
Payment Slippage
Payment slippage is the difference between the expected economic outcome of a payment or conversion and the actual result at execution. It…
Payment Span
Payment Span describes a timed unit of work within a distributed trace that represents one operation performed while processing or observing a…
Payment Span ID
Payment Span ID is the identifier assigned to one span within a distributed payment trace so the operation can be referenced and…
Payment Stack
A payment stack is the collection of technical and operational layers used to accept, process, monitor, settle, and account for payments. It…
Payment State
Payment state is the system’s current authoritative classification of a payment, such as new, waiting, paying, paid, underpaid, expired, refunding, or refunded.…
Payment State Machine
A payment state machine is a formal model that defines payment states, the events that move a payment between them, and the…
Payment State Management
Payment state management is the operational and technical discipline of creating, updating, reconciling, and governing payment states throughout the payment lifecycle. It…
Payment State Persistence
Payment State Persistence means the durable storage of payment state, transitions, and decision-critical data so the system can recover, verify, and continue…
Payment State Reconstruction
Payment State Reconstruction describes the process of rebuilding the best supported payment state and history from available messages, events, provider records, ledger…
Payment State Recovery
Payment State Recovery is the process of reconstructing the correct authoritative state of payment objects after data loss, outage, replay failure, or…
Payment State Replay
Payment State Replay is the controlled reprocessing of recorded payment events, commands, or messages to reproduce state, rebuild a projection, recover a…
Payment State Snapshot
Payment State Snapshot means a point-in-time representation of a payment object's material state and version used for recovery, audit, comparison, or faster…
Payment State Tracking
Payment state tracking is the continuous recording and observation of a payment’s lifecycle position and the evidence behind each change. It follows…
Payment State Transition
A payment state transition is an approved change from one payment state to another after a defined event and validation rule. Examples…
Payment State Version
Payment State Version describes a monotonic or otherwise controlled version value that identifies which revision of a payment object's state a record,…