working visits organised by the participating countries or another country to enable officials to acquire or increase their expertise or knowledge in customs matters;
turais oibre arna reáchtáil ag na tíortha rannpháirteacha nó ag tír eile chun cur ar a gcumas d'oifigigh a gcuid saineolais nó tuisceana ar chúrsaí custaim a leathnú, nó chun an saineolas nó an tuiscint sin a shealbhú;