where one of the obligations laid down in the customs legislation concerning the introduction of non-Union goods into the customs territory of the Union has not been fulfilled, or the goods have been withheld from customs supervision;
i gcás nár comhlíonadh ceann de na hoibleagáidí a leagadh síos sa reachtaíocht chustaim maidir le hearraí nach earraí de chuid an Aontais iad a thabhairt isteach i gcríoch custaim an Aontais nó i gcás inar coinníodh na hearraí siar ó mhaoirseacht chustaim;