Free trade should be simple – a nation has the policy that there are no tariffs, custom duties, or quotas at all.
Export restrictions imply that a company has to register a product with the source and destination companies and let the governments track whether the products meet import/export restrictions.
This systems would work great if people did not have the ability to sue companies and individuals for compensatory or punitive damages. Then business would no longer be liable for errors in imports and exports.
Liability of individuals and businesses could be replaced by liability of the government. Citizens could seek redress of grievance from the government for failing to uphold the law.