because factors used to determine the customs value of goods are expressed in a currency other than that of the Member State where the customs value is determined;
de bhrí go ndéantar tosca a mbainfear úsáid astu chun luach custaim na n-earraí a chur in iúl in airgeadra seachas airgeadra an Bhallstáit ina gcinntear an luach custaim;