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Aggregating Inventory Across Multiple Sources

August 31, 2026

Summary

Learn how to combine inventory quantities from different suppliers that share a common identifier like a UPC or GTIN to surface a total stock level on your sales channels.

When multiple sources provide the same product, Flxpoint can automatically aggregate their individual stock levels into a single total quantity. This allows you to represent your full selling potential on channels like Amazon or Shopify by summing the inventory available across your entire supplier network.

Flxpoint identifies identical products across different sources using unique identifiers. To successfully merge quantities, the products must share a matching value in one of the following fields:

  • UPC (Universal Product Code)
  • GTIN (Global Trade Item Number)
  • EAN (European Article Number)
  • MPN (Manufacturer Part Number) + Brand

When the Build Master Catalog job runs, Flxpoint identifies these matches and creates a single Master Catalog record linked to multiple source inventory records.

  1. Navigate to Inventory and select your Master Catalog.
  2. Locate the product you wish to aggregate and ensure it is linked to all relevant sources (e.g., D&H and TD Synnex).
  3. Navigate to Channels and select the specific sales channel where you want to show the combined total.
  4. Open the Mapping Template for that channel and locate the Quantity field.
  5. Ensure the mapping logic is set to use the Estimated Quantity or Total Quantity across all linked sources.
  6. Save the template and run a Channel Sync to update the listing.

By default, Flxpoint calculates the aggregate quantity as the sum of all active, non-paused sources. If Source A has 10 units and Source B has 25 units, the Channel Listing will reflect a total of 35 units.

Note: If you have applied specific quantity rules (such as a "Maximum Quantity to Sync" or "Safety Stock" buffer) at the source level, these rules are applied before the quantities are summed for the channel.
Quantities are not merging?

Check the identifiers in the Source Inventory records. If Source A lists a UPC as a 12-digit number and Source B includes leading zeros, they may not match. Ensure your Mapping Templates for "Get Inventory" normalize these identifiers.

Total quantity is lower than expected?

Verify that all sources are currently enabled and not in a "Paused" status. Flxpoint excludes quantities from sources that are disabled or have failed their most recent inventory sync.

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