If a request cannot be executed because it does not contain all of the necessary information referred to in Article 5, the requested court shall inform the requesting court thereof without delay and, at the latest, within 30 days of receipt of the request using form D in Annex I, and shall request the requesting court to send the missing information, specifying the information missing as precisely as possible.

If a request cannot be executed because a deposit or advance has been requested in accordance with Article 22(3), the requested court shall inform the requesting court thereof without delay, at the latest within 30 days of receipt of the request using form D in Annex I, and shall inform the requesting court how the deposit or advance is to be made. The requested court shall acknowledge receipt of the deposit or advance without delay, at the latest within 10 days of receiving the deposit or the advance, using form E in Annex I.