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Feed Delta Processing

Data managementIntermediate Level

Feed delta processing sends only the products and fields that changed since the last update, instead of the full catalog feed.

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What is Feed Delta Processing?

Feed delta processing is a way of updating a product feed by sending only what changed since the last run: new products, edited fields and removed items. The changes are called deltas, and each is matched to a product by its SKU or ID. The alternative is a full feed, which resends every product every time. Full feeds are simple and self-correcting but slow and heavy for large catalogs. Delta feeds are small and fast, so price and stock changes reach channels sooner, but they depend on reliable change tracking. Most setups combine both: frequent deltas plus a periodic full feed to fix drift. The product feed management guide explains how to plan feeds per channel.

Why Feed Delta Processing matters for e-commerce

For a catalog with tens of thousands of products, resending everything for a handful of price changes wastes processing time and often hits channel limits. Delta processing keeps updates small, so marketplaces and comparison sites pick up changes sooner and the risk of overselling drops. It also makes errors easier to trace. When an update fails, you know which few products were in it. The trade-off is that missed deltas cause silent drift between your source and the channel, which is why a scheduled full feed remains a good safety net.

Examples of Feed Delta Processing

  • 1Change: Price update, Delta sent: SKU 1042, price 24.95, Not sent: All other fields and products
  • 2Change: New product added, Delta sent: Full record for SKU 2210
  • 3Change: Product discontinued, Delta sent: Delete instruction for SKU 0877
  • 4Change: Stock update for 300 SKUs, Delta sent: SKU and quantity only, Full feed: Still runs once a night
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How WISEPIM Helps

  • With opt-in auto-sync, WISEPIM pushes a saved product to supported platforms about 30 seconds later, instead of resending the whole catalog.
  • Schedule full exports or imports hourly, daily, weekly or monthly with automations as a safety net.
  • Keep stable SKUs and IDs on every product, so changes always match the right item in the channel.
  • Check data with Quality Guard rules before it leaves, so bad values do not spread through updates.

Common mistakes with Feed Delta Processing

  • Relying only on deltas and never running a full feed to correct drift.
  • Changing SKU or ID values, so the channel treats an edit as a new product.
  • Forgetting to send deletions, so discontinued products stay live in the channel.
  • Not logging which deltas were sent, which makes failed updates hard to trace.

Tips for Feed Delta Processing

  • Keep SKUs stable for the full life of a product.
  • Run a full feed at least once a day or week, depending on catalog size and channel rules.
  • Send price and stock as deltas first, because they change most and matter most.
  • Check the channel's feed rules before you start, as the product feed optimization guides list per channel.

Trends around Feed Delta Processing

  • Channels move from file uploads to APIs, which suit small, frequent delta updates.
  • Event-driven setups send a change when a product is saved instead of on a fixed schedule.
  • Separate fast feeds for price and stock run next to slower feeds for content.

Tools for Feed Delta Processing

  • WISEPIM (auto-sync and scheduled exports)
  • Akeneo
  • Channable
  • Feedonomics
  • Google Merchant Center Content API

Related Terms

Attribute CollisionCanonical Data ModelCircular Economy Data ModelCross-Border Trade (CBT) AttributesData ContractData Decay

Also Known As

Delta feedIncremental feed updatesDelta syncPartial feed

Frequently Asked Questions

A full feed sends every product each time. A delta feed sends only the products and fields that changed since the last run. Full feeds are simpler and fix drift; delta feeds are smaller and faster.

The delta includes a delete or deactivate instruction for the removed SKU. If deletions are not sent, the product stays live in the channel, which is a common source of ghost listings.

Run a full feed after large catalog changes, after a failed update and on a fixed schedule as a safety net. It corrects any drift that missed deltas caused.

No. Some channels only accept full file uploads, while API-based channels usually accept partial updates. Check each channel's feed documentation before you set up delta processing.

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