Schema validation alone does not enforce business rules, developer argues

A DEV Community article discusses the distinction between declaring a rule in a contract and actively enforcing it during software execution. The author argues that a validated schema or a signed contract does not guarantee a rule, like requiring human approval for a refund, will be checked at runtime. They illustrate this using the Hlinor Agent Registry, where a specific policy must be compiled and integrated to actively block actions. The article concludes that developers must verify which code reads a rule and what happens when it fails, rather than assuming a schema alone provides security.