The WCO has developed a WCO Secretariat Note  highlighting certain measures that

The WCO has developed a WCO Secretariat Note  highlighting certain measures that, once effectively implemented, can go to mitigate the effects of the COVID-19 pandemic.  The document provides
(Pages 1 to 5) lists of measures which Customs should seek to implement.
LINK TO WCO SECRETARIAT NOTE 
Select the measure which you think is the most important and in no more than 200 words explain why this is the case.