Synchronous Order Validation

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sequenceDiagram
    participant Ch as Channel
    participant DR as Deliverect
    participant POS as POS

    Note over Ch,POS: Synchronous validation
    Ch->>DR: Pre-checkout validation request
    DR->>POS: POST validateOrderWebhookURL (order + validationId + callbackUrl)
    POS-->>DR: 200 + validation JSON body
    DR-->>Ch: Structured validation result
    Ch->>DR: Place/commit order
    DR->>POS: POST ordersWebhookURL (insert order)