Three Errors That Reject the Whole File

Source: WISEcode Bulk Product Upload Instructions, template v3.2 (11 August 2026).

Most problems affect only the row they occur in. Three do not — they stop the entire file from being processed. Check for these before you upload.

1. A duplicate UPC

The same UPC appearing on two rows blocks the file. Each UPC must be unique within the file. A multi-pack and its base unit have different UPCs, so referencing a base unit is not a duplicate.

2. A brand that is not registered

Every value in the Brand column must match a brand already registered in your account, spelled the same way. Register the brand first, then upload.

3. A modified header row

Renaming, reordering or removing header columns breaks the mapping the importer relies on. Always start from a fresh copy of the template and add rows beneath the header without touching it.

About the UPC itself

A UPC must be a valid GTIN with a correct check digit. It also derives the food's underlying identifier, which means it cannot be changed once the product is published — a mistyped UPC is not a quick edit later.

Related reading

• What Happens After You Upload: Bulk Review and Fixing Gaps
• How to Enter Multi-Packs, Cases and Club Packs