To help you make the right decision, GS1 Global website also hosts the "GS1 GTIN Management Decision-Support Tool". It will not only explain the Guiding Principals for making good decisions but also help you decide whether you need to change the GTIN on your product, by simply answering basic questions about your individual situation. You can access the tool using the link below:
You can also read this article about re-using your GTIN (Barcode number) on our Help Centre here.
As always, please do not hesitate to contact the GS1 NZ Support Team if you need any further assistance or have questions.
Phone: 0800 10 23 56
Version 1.1 – Updated 22nd November 2018