Описание тега gs1-datamatrix
NoneGs 1-datamatrix is the combination of datamatrix technology and application of GS1 standard which is a definition on how to encode prodution/supply chain information when targeting healthcare products.
GS1 page specially talking about 2D barcode (like datamatrix):
https://www.gs1.org/barcodes/2d
Full GS1 standard can be found here and is still evolving:
https://www.gs1.org/standards/barcodes-epcrfid-id-keys/gs1-general-specifications