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    Developer Guide February 15, 2025

    DIY Developer Guide: Building Custom Integrations for Zulily

    A guide to building custom integrations with Zulily's vendor portal and EDI systems for flash sale and marketplace operations.

    DIY Developer Guide: Building Custom Integrations for Zulily

    Overview

    Zulily is a flash-sale marketplace focused on mothers, babies, and children's products. This guide covers building custom integrations for vendor operations including order management, inventory feeds, and shipment confirmations.

    Prerequisites

    • Zulily Vendor Portal access and EDI credentials
    • Familiarity with EDI standards (850, 856, 810), SFTP, and CSV/XML data formats
    • Tools: EDI translators, SFTP clients, Zulily Vendor Documentation

    Step 1: Authentication

    Zulily vendor integrations typically use SFTP with SSH keys or EDI VAN connections. Set up secure file transfer credentials through the vendor portal.

    Step 2: Endpoint Discovery and Data Mapping

    Common Data Feeds: Purchase Orders (EDI 850), Advance Ship Notices (EDI 856), Invoices (EDI 810), Inventory Feeds.

    Map Zulily SKUs and event IDs to your internal catalog structure.

    Step 3: Building Integration Flows

    • Inbound (from Zulily): Receive purchase orders, event schedules, return authorizations
    • Outbound (to Zulily): Submit inventory feeds, shipment confirmations, invoices

    Step 4: Error Handling and Retry Logic

    Handle file transfer failures, EDI validation errors, and data format mismatches. Implement automated retry with alerting.

    Step 5: Security Best Practices

    • Use SSH key authentication for SFTP
    • Encrypt all data files in transit
    • Implement file integrity validation
    • Monitor for unauthorized access

    Step 6: Testing and Validation

    • Test EDI document exchange with Zulily test environment
    • Validate purchase order parsing accuracy
    • Verify shipment confirmation workflows

    Step 7: Deployment and Monitoring

    • Monitor file transfer success rates
    • Alert on EDI validation failures
    • Track order fulfillment SLAs

    When to Use a Managed Platform

    For vendors managing multiple marketplace integrations alongside Zulily, a managed integration platform like APIWORX provides unified marketplace orchestration.

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