MarketOne · 01
How do online payment gateways work?
A customer selects a method, the provider processes the transaction and the store receives a result. Confirm orders using trusted server-side notifications rather than a browser success screen alone.
MarketOne · 02
Payment gateway versus merchant account
A bank virtual POS and a payment service provider can differ in contracts, fees, settlement schedules and implementation. Evaluate operational costs as well as transaction fees.
MarketOne · 03
Payment and order workflows in MarketOne
MarketOne can connect supported checkout options to the store order workflow. Reliable mapping between payment references and orders supports follow-up and customer service.
PayTR
Payment provider
iyzico
Payment provider
MarketOne
Order workflow
MarketOne · 04
PayTR integration
PayTR is a supported provider option where account approval and integration requirements are met. Available methods and refund functions depend on the implemented scope.
MarketOne · 05
iyzico integration
iyzico is another supported payment provider. Account eligibility, technical configuration and supported methods depend on the provider’s current terms.
MarketOne · 06
Designing a friction-aware checkout
Show the final price, shipping costs and required policies clearly. Reduce unnecessary steps, explain errors and keep the checkout usable on smaller screens.
MarketOne · 07
Successful, pending and failed payments
Do not treat pending transactions as paid. Plan for failed attempts, repeated notifications and interrupted connections, with idempotent processing and explicit order states.
MarketOne · 08
Payment security and 3D Secure
Handling card data can trigger different compliance obligations. Assess 3D Secure, PCI DSS and hosted checkout responsibilities for the specific provider and integration architecture.
MarketOne · 09
Cancellations, refunds and reconciliation
A cancellation before capture differs from refunding a settled transaction. Keep order and payment records consistent and reconcile transactions with the provider where necessary.
MarketOne · 10
Mobile checkout experience
Use readable fields, appropriate mobile keyboards and clear confirmation states. Native in-app purchasing and mobile web checkout may follow different rules.
MarketOne · 11
Choosing a payment provider
Compare fees, settlement timing, cards, installments, currencies, refunds, support and API documentation. Do not assume all features are offered by every provider.
| Criterion | Why it matters |
|---|---|
| Fees / Kosten / Díjak | Transaction and settlement cost |
| API / Support | Operational compatibility |
| Refunds / Erstattungen | After-sales workflow |
MarketOne · 12
Integration setup checklist
Verify the merchant account and credentials; test successful, failed and duplicate callback scenarios; then secure production keys and monitor the first live transactions.
- Merchant account approval
- Secure credentials and callback verification
- Sandbox payment scenarios
- Production monitoring
MarketOne · 13
Common payment workflow mistakes
Common risks include trusting redirects alone, skipping callback verification, processing the same event twice and showing vague errors.
MarketOne · 14
Connecting payment and order operations
Think about payment together with MarketOne product, inventory and order workflows to reduce context switching across operational tools.
FAQ
FAQ · E-Commerce Payment Gateways and Checkout
What is a payment gateway?
A payment gateway enables an online store to accept and process electronic payments.
Can PayTR and iyzico be used together?
This depends on the active integration configuration and provider arrangements.
Is 3D Secure mandatory for every payment?
Not always; requirements vary by provider, transaction type and risk rules.
What happens after a failed payment?
The order should remain unpaid until a verified successful payment is received.
Are refunds automatic?
Automation depends on the provider API and the implemented MarketOne workflow.
Can I accept international payments?
Eligibility depends on provider coverage, merchant location and supported currencies.
MarketOne
E-Commerce Payment Gateways and Checkout
Connect the checkout experience with a clear, traceable order workflow and make payment decisions with confidence.
Payment methods, currencies, country eligibility and available APIs depend on the provider agreement and integration scope.
