Error: Products with a missing reference

When exporting products, you may see:

Products having empty references, Product ID: [2/7, 2/8, 2/9, 2/10, …]

(Export summary may also show Empty reference.)

The list uses product / combination IDs in the form 1/2 whose Reference field is empty.

Example:

Fill in a unique reference for every product / combination:

Validate your catalog structure

Find a product by its ID:

Updated on: 12/10/2026