English to Russian Law/Patents Law: Contract(s) corporate governance

In providing a guarantee to the Company, the Bank may rely upon the information contained in this letter, which has been duly authorised by all necessary corporate action. The Bank may also rely on the information contained in the attached documents, all of which are true and correct copies of the documents which they purport to be.

Подскажите, пожалуйста, корректный перевод выражения "duly authorised by all necessary corporate action" в данном контексте. Заранее спасибо.