> ## Documentation Index
> Fetch the complete documentation index at: https://docs.debitdirect.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Flow

Processing Betalingsservice transactions involves multiple parties working together to ensure seamless mandate creation and payment processing. The following sequence diagram illustrates the key interactions between the Consumer, Mastercard, Bank, Debitdirect, and the Independent Software Vendor (ISV).

All events are processed asynchronously to ensure efficiency and reliability.

```mermaid theme={null}
sequenceDiagram
  Consumer->>Mastercard: Create BS mandate via webform, bank or slip
  Mastercard->>Bank: Validate and issue mandate.
  Mastercard->>Debitdirect: Mandate exchange (Process)
  Debitdirect->>ISV: Mandate created event (webhook)
  
  ISV->>Debitdirect: Create payment (via API)
  Debitdirect->>Mastercard: Schedule payment (Process)
  Mastercard->>Bank: Transact payment (debit process)
  Mastercard->>Debitdirect: Settle payment (Process)
  Debitdirect->>ISV: Settle payment event (webhook)
```

As an Independent Software Vendor (ISV), you will primarily interact with Debitdirect's API to create payments after receiving mandate creation events via webhooks. Debitdirect handles the complex interactions with Mastercard and the banks, ensuring that mandates are validated and payments are processed efficiently.