In the context of diplomatic protocol, what is the mandatory consequence of failing to align an invitation's honorifics with the recipient's official government rank?

In formal diplomatic protocol, there is no single, globally codified, or mandatory legal penalty for misaddressing an invitation. Instead, the consequence is a breach of etiquette that signifies a lack of professional competence and a potential lack of respect for the recipient’s sovereign status. Because rank is a public statement of a nation’s standing,....