Hi James,
Live Link doesn't specifically enforce a limitation, though downstream systems and connections do impose limitations. I believe this limit can differ from country to country. Therefore, it's best practice to limit the number of characters to a reasonable number.
If you have a use case that you could provide more detail about, we can consult with our experts in that region to discuss best practices based on your use case and country.
Thanks,
Mike
Michael Smith,
Product Manager