> ## Documentation Index > Fetch the complete documentation index at: https://docs.arcuserp.com/llms.txt > Use this file to discover all available pages before exploring further. # Marketplace Connectors > Marketplace connectors bring external orders, fulfillments, tracking updates, listings, and sync history into Arcus. Use this guide for Shopify, Amazon, eBay, and other marketplace-style connections managed from Integrations. ## Use Integrations For Connector-Owned Channels Custom sales channels are managed from Sales Channels settings. Connector-owned channels, such as Shopify, Amazon, and eBay, are managed from Integrations because the connector controls order import, sync, status, and disconnect behavior. Configure Shopify modal with connection tab, live mode, health status, last sync, reconnect, and disconnect actions ## Shopify Connection Flow 1. Open **Integrations**. 2. Open the **Shopify** card. 3. If connecting for the first time, enter the store handle or myshopify.com domain. 4. Continue to Shopify and grant the requested access. 5. After returning to Arcus, open **Configure Shopify**. 6. Review Connection, Sync Settings, Mapping, Webhooks, Logs, and Accounting tabs. 7. Run a test sync or small order workflow before relying on production volume. **Use the Shopify subdomain** Use the store's myshopify.com domain or admin store handle. Do not use a custom public storefront domain when connecting Shopify. ## Shopify Configure Tabs * **Connection**: connection health, mode, last sync, reconnect, and disconnect. * **Sync Settings**: controls which Shopify data moves and how frequently. * **Mapping**: connects Shopify data to Arcus records and locations. * **Webhooks**: verifies real-time events from Shopify. * **Logs**: shows recent connector activity and failures. * **Accounting**: future or connector-specific accounting context when available. **Disconnecting stops future sync, not history** Disconnecting a marketplace connector stops future import or push activity. Existing orders, products, listings, accounting records, and audit history should remain in Arcus. ## Amazon And eBay Setup Amazon and eBay use connector cards with credentials, environment selection, setup guides, test actions, and logs. Their credentials and required permissions come from each external marketplace account. * **Amazon**: seller identity, marketplace, application credentials, refresh token, region, and FBA ship-from setup. * **eBay**: application credentials and seller refresh token from the OAuth consent flow. * **Mode**: use sandbox keys for test entities and production keys for live selling. * **Logs**: use connector logs to review import, fulfillment, and sync failures. ## Use Sync Dashboard For Marketplace Troubleshooting The Sync Dashboard helps admins review recent marketplace activity across connectors. Use it when orders did not import, fulfillment did not push, or listing/report data seems stale. Sync Dashboard modal showing all, inbound, and outbound sync filters for marketplace and connector activity **Separate channel defaults from connector health** If orders import but defaults look wrong, review Sales Channels settings. If orders do not import at all, start with the connector status, permissions, webhooks, and logs. ## Marketplace Drift And Missing SKU Review Marketplace data can drift when a listing, SKU, inventory quantity, fulfillment, or price changes outside Arcus. Use connector logs, product mapping, and listing performance to decide whether Arcus or the marketplace should be corrected. * **Missing SKU**: review whether the connector should auto-create a placeholder product or block for manual mapping. * **Inventory drift**: compare Arcus available inventory, marketplace available inventory, open orders, transfers, and recent sync activity. * **Price drift**: compare product price, pricing rules, marketplace listing price, and any marketplace-side override. * **Fulfillment drift**: confirm whether tracking was pushed from Arcus or updated directly in the marketplace. * **Deleted external record**: clear stale mapping only after confirming the marketplace record is truly gone. ## Common Blocks * **Orders do not import**: check connector health, sync logs, store permissions, webhook status, and whether the order is inside the configured sync scope. * **Fulfillment does not push back**: review fulfillment sync settings, tracking data, carrier/service mapping, and external order status. * **Listings look unmapped**: review product SKUs, marketplace listing mapping, and external SKU consistency. * **Wrong channel defaults apply**: review Sales Channels settings after confirming the connector is healthy. * **Production marketplace connected to sandbox**: disconnect or reconnect with the correct environment and test before continuing. ## Related Articles Review connector mode, health, masked credentials, tests, logs, sync dashboard, and safe reconnect steps. Recover authorization failures, webhook issues, sync delays, mode mismatch, and stale external records. Map Arcus products and variants to marketplace listings, resolve drift, and use Shopify Bulk Map. Configure order-source defaults, connector-owned channels, customer portal access, shared links, and portal branding. Analyze marketplace listings by channel, units sold, revenue, status, and zero-sales candidates. Build a sales order, add customers, set addresses, and add products. Buy labels, void labels, track shipments, and handle carrier errors.