Can. 41

The executor of an administrative act to whom is entrusted merely the task of execution cannot refuse the execution of this act unless it clearly appears that the act itself is null or cannot be upheld for another grave cause, or the conditions attached to the administrative act itself have not been fulfilled. Nevertheless, if the execution of the administrative act seems inopportune due to the circumstances of person or place, the executor is to suspend the execution. In such cases the executor is to inform immediately the authority who issued the act.