Batch identifier
A code used to connect a product or sample with a particular production batch.
In practice
Look for the code on the packaging and on any accompanying report. Compare the characters themselves rather than relying on a product name or a similar photograph.
Why the distinction matters
A cultivar name can appear on more than one product. The identifier is the detail you need when asking which report belongs with the item in front of you. Record it alongside your notes, purchase information and photographs.