Plan the whole payment journey.
Prepare for a provider-backed integration. This site has no live SlinePay API or SDK; the checkout is a local demonstration.
Live availability is subject to eligibility and processing arrangements.
1. Confirm the prerequisites
Identify the actual processing partner, eligible business use case, enabled methods, approved fees and the environments available for testing.
2. Give the server responsibility
Create the order using an amount and currency derived from the merchant catalogue. Keep provider credentials server-side. Treat browser values as untrusted.
3. Use the supported checkout
Launch the provider’s maintained hosted flow or component with only its supported configuration. Never collect PINs, OTPs or card security codes in a mock form.
4. Verify the result
Use the partner’s prescribed verification and authoritative status lookup. A browser success redirect must not trigger fulfilment on its own.
5. Process events and reconcile
Validate events, record durable outcomes and make repeated processing safe. Link payment, refund and settlement references; investigate uncertain outcomes.
6. Test before activation
Check success, pending, decline, retry, duplicate events, partial refunds, authorisation and reconciliation. Production activation follows the actual provider and business review.