Sync Product Data from Your ERP to Your Marketplaces

Before each sync, ERPkit computes a one-way hash of each product's syncable fields (price, compare-at price, stock, weight, barcode, and marketplace-specific fields such as eco-taxes and promotion dates). This hash is compared against the hash stored from the previous sync. If the hashes match, the product is skipped entirely: no API call is made.

This approach has three practical benefits. First, syncs are fast: a catalog of 2,000 products where only 15 changed results in 15 API calls, not 2,000. Second, you stay well within marketplace API rate limits, even with large catalogs. Third, the hash cache is disposable — if it is ever lost or cleared, the next sync simply treats every product as changed and rebuilds the cache. No data is lost, and subsequent syncs return to delta mode automatically.

Delta sync is built into every ERPkit plan. There is no configuration required — it works out of the box from your first sync.

Each Dolibarr product has a custom extrafield for each marketplace (for example, shopify_variant_id, woocommerce_variant_id, or — per eBay region — ebay_de_listing_id). When this field contains a valid variant ID, listing ID, or offer SKU, ERPkit knows that product should be synced to that marketplace. If the field is empty, the product is silently skipped. For eBay specifically, that listing ID is what ERPkit uses to push price and stock to the right offer — and separately, the SKU on your eBay listing should match your Dolibarr ref so incoming eBay orders link back to the right Dolibarr product.

You can set variant IDs manually, or use the auto-match feature in the ERPkit dashboard. Auto-match compares Dolibarr product references against marketplace SKUs and links matching products automatically. For products with multiple variants or combinations, each Dolibarr product maps to exactly one marketplace variant — giving you precise control over which variant receives the update.

This design means Dolibarr is always the source of truth for product data. Your marketplace listings keep their titles, descriptions, images, and SEO content untouched. ERPkit only updates operational data: price, compare-at price, and stock, plus weight, barcode, and marketplace-specific fields such as eco-taxes and promotion dates where the marketplace takes them.

What product data does ERPkit sync?

ERPkit syncs the selling price, the compare-at (strikethrough) price, and stock to every marketplace. On Shopify, WooCommerce, PrestaShop, and eBay it also sends weight, with automatic unit conversion, and barcode (EAN/UPC). Cdiscount also gets the VAT rate and its eco-taxes. Leroy Merlin, Bricoman, Castorama, and Vente-unique also get promotion dates, and Leroy Merlin and Bricoman the eco-participation. It does not sync titles, descriptions, images, or other presentation data. Your marketplace listings stay exactly as you designed them.

How often are products synced?

Sync frequency depends on your subscription tier. Each tier includes a different sync interval, and syncs run automatically on that schedule. You can also trigger a sync manually from the dashboard at any time. Each sync uses delta detection — only products whose data has changed since the last sync are sent to the marketplace, keeping syncs fast and predictable even with large catalogs.

Do I need to sync all my products?

No. ERPkit only syncs products that have a marketplace variant ID set in their Dolibarr extrafield. Products without a variant ID are silently skipped. You have full control over which products are linked and which are left alone.