Open ghost opened 5 years ago
This looks correct [source]:
for a 13-digit ISBN, a prefix element – a GS1 prefix: so far 978 or 979 have been made available by GS1
Do you have any reference as to that being wrong?
Ah, sorry, the title clarifies this: you're using GS1, but this is a ISBN-only limitation. Good catch.
Here is my code:
and I get the following error:
Thank you.