Trade item specification varies within the parameters of the party assigning the GTIN.
New GTIN for:
Existing higher-level packaging
Hierarchy level of GTIN assignment
Example business scenarios that require GTIN change
The trade item still falls within the specification defined for trading purposes so no new GTIN is required. The supplier could use the Application Identifier for Product Variant (AI (20)) to distinguish the technical improvement.
Consequence if rule not applied: Unnecessary introduction of new GTINs.