It is because the system did not aggregate two different quantity units. If you only need the values, use the option ''Ignore quantity units differences''  There are the list of standard country groups: America LAIA 32 +68 +76 +152 +170 +192 +218 +473 +484 +600 +604 +858 +862APEC 490 +36 +96 +124 +152 +156 +344 +360 +392 +410 +458 ...

http://comtrade.un.org/ws/refs/getCountryList.aspx  The country list (XML Output) from above URL contains Countries and Country groups (or) Regions.    Q’s:   -          Why is the above URL returning both Countries and Country groups (or) regions? It should return the ...

http://comtrade.un.org/ws/refs/getCountryList.aspx   The country list (XML Output) from above URL contains Countries and Country groups (or) Regions.    Q’s:   -          Why is the above URL returning both Countries and Country groups (or) regions? It should return the ...

Because ASEAN is not individual reporter/partner, you have to create  ASEAN country group consisting all ASEAN member countries.  Then in the query selection, you choose ASEAN as partner/reporter and system will aggregate data from individual countries for you.  Please refer to ...