Set payment asynchronously

POST https://api.fiscanner.net/Vouchers/CompletePaymentBySaga

Payment Processing Workflow:
This endpoint is typically called as part of a larger payment processing saga
that handles the complete transaction lifecycle:

1. Payment authorization and capture
2. Transaction recording and audit trail creation
3. Voucher activation or value adjustment
4. Notification to relevant parties
5. Reconciliation and reporting updates

Transaction Data:
The payment completion captures essential transaction information:

1. Order amount and currency for financial reconciliation
2. Country information for regulatory compliance
3. Timestamp for audit and reporting purposes
4. Request correlation for saga state management

Integration Points:
This endpoint integrates with:

1. Payment gateway services for transaction processing
2. Financial reporting systems for transaction recording
3. Compliance engines for regulatory requirements
4. Notification services for customer and merchant alerts