This kind of thing, the most taboo is to play the edge ball, or unclear. There are many departments, associations and formal institutions that can do some sign authorization in their own fields. There are only one or two words missing, but they don't belong to the same licensor at all. Misuse, it is easy to be sued.
In the event of a dispute, according to the relevant laws and regulations, a lot of money will be fined, and even corresponding legal responsibilities will be borne. Or, to be honest, whoever has the authorization uses it word for word.