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Rules for changing GTINs
If changes are made to existing products, the question often arises of whether a new GTIN
should be allocated to the changed package or whether the existing GTIN can be retained.
The general rule is that if the content of a package is changed (for example, the net weight
or the number of units the package contains), the package shall be allocated a new GTIN.
If the design or the price is changed the existing GTIN is retained. On GS1 Norway's
website under GTIN rules (1) you can find further links to sites in English explaining the
he item should have a new GTIN or keep its
Rules for changing NRF numbers
If changes are made to an existing product that do not affect the product's
characteristics it is not normally necessary to change the NRF number. This also applies
when the location of manufacture is changed.
If changes are made to a product that lead to the GTIN for the F‐pack being altered, the
NRF number must also be changed.
If changes are made to the product that lead to the GTIN for an M‐pack, D‐pack or T‐
pack being altered, the NRF number must not be changed.
One advantage of this is that the NRF number can follow the product for a longer
period. If you have any questions about whether or not to change the NRF number,
please contact NRF.
Barcode labelling of products
In general the GS1 system offers the following barcode symbols for marking the GTIN
on F‐packs, M‐packs, D‐packs and T‐packs:
1. The EAN/UPC symbol
2. The ITF 14 symbol
3. The GS1‐128 symbol
The following is recommended for suppliers who are required to label their products
with a GTIN barcode:
1,2,3,4,5,6,7,8 10,11,12,13,14,15,16,17,18,19,...25
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