Is one absolved of responsibility for the right of another pharmacist after accepting the license despite the possibility of incomplete documents, and the other pharmacist's refusal to accept any compensation?

There is no blame upon you for authenticating the aforementioned engineering drawing, and this is not considered a violation of rights or an act of aggression, as long as the drawing conforms to reality and is not forged or fraudulent. Consequently, there is no sin upon you for accepting the license and benefiting from it, and the other pharmacist has no right in this matter. You have done well by seeking what is lawful and fearing injustice, so remain steadfast on that path, and beware of wronging people in their wealth or their honor.