Artikel 45

The holder must give notice of non-acceptance or non-payment to his endorser and to the drawer within the four business days which follow the day for protest or, in case of a stipulation „retour sans frais", the day for presentment. Every endorser must, within the two business days following the day on which he receives notice, notify his endorser of the notice he has received, mentioning the names and addresses of those who have given the previous notices, and so on through the series until the drawer is reached. The periods mentioned above run from the receipt of the preceding notice.
When, in conformity with the preceding paragraph, notice is given to a person who has signed a bill of exchange, the same notice must be given within the same limit of time to his avaliseur.
Where an endorser either has not specified his address or has specified it in an illegible manner, it is sufficient that notice should be given to the preceding endorser.
A person who must give notice may give it in any form whatever, even by simply returning the bill of exchange.
He must prove that he has given notice within the time allowed. This time-limit shall be regarded as having been observed if a letter giving the notice has been posted within the prescribed time.
A person who does not give notice within the limit of time mentioned above does not forfeit his rights. He is responsible for the injury, if any, caused by his negligence, but the damages shall not exceed the amount of the bill of exchange.