In February 2019, the Central Committee of the Communist Party issued Regulations on Requesting Instructions and Reporting on Major Matters. Their rule is short: what must be requested must be requested, and what must be reported must be reported (该请示的必须请示,该报告的必须报告).
A request to a higher Party organization on a major matter must be made in advance, so that the higher level has enough time to study it and decide. Only when an emergency leaves no time to ask may an official act first. Even then, the official must report to the higher level promptly afterwards.