Assertion: convention's authority | /r/HasProperty | advised of reason
Facets:
Source sentences:
text: Under article 13, (a) the documents establishing the execution of the letter of request are to be sent by the requested authority (the recipient of the letter of request) to the requesting authority by the same channel that was used by the requesting authority, and (b) whenever the letter of request is not executed (in whole or in part), the requesting authority is to be informed immediately and advised of the reasons.