 Aside from those outlined in the Vienna Convention on Diplomatic Relations, there are few formal requirements outlining what a consular official must do.For example, for some countries, consular officials may be responsible for the issue of visas; other countries may limit "consular services" to providing assistance to compatriots, legalization of documents, etc.Nonetheless, consulates proper will be headed by consuls of various ranks, even if such officials have little or no connection with the more limited sense of consular service.