Sandbox
The test environment for one-time payments and subscriptions: the full integration cycle without touching production — no real payments or charges happen. Inside — test credentials and data, a quick start, payment flows for carrier billing (DCB), bank card and SBP, refunds and recurring payments, error and callback emulation, code references, differences from production, and ready-made clients.
One-time payments
- Introduction
- Quick start
- Access & test data
- Sandbox vs production
- Request signing
- Flow: MSISDN
- Flow: bank card
- Flow: SBP
- Flow: refund
- Flow: recurring
- Payment widget
- Flow: card binding
- Request structure
- Create contract
- Authorize contract
- Cancel contract
- Create invoice
- Invoice status
- Cancel invoice
- Refund invoice
- Billing check
- Callbacks
- JSON v3 errors (HTTP)
- ResultCode triggers
- Card errors
- Sandbox knobs (test_info)
- Common pitfalls
- Best practices
- Reference client
- FAQ
- MCP server
- ResultCode
- PaymentResultCode
- InvoiceStatus
- PaymentStatus
- AuthorizationType
- BillingChannel
- Operators