“0” means “0” (= e.g. if you have no occasional volunteers you can write “0”). On the contrary, if you do not have the information, you should insert “Not available”.
As written in the taxonomy and on the question mark (“?”) next to the indicator this is the definition: “Food received by a Food Bank from another Food Bank in a different country”.
The data collection covers the calendar year 2021. Hence, please communicate the most recent data of that year. The only exception is the number of Food Banks and the number of warehouses, which refer to 01 January 2021.