To prevent markings from being easily erased and to clarify which essential components the marking should be affixed to, common Union rules on marking should be introduced.
Chun cosc a chur ar mharcálacha a bheith á scriosadh go héasca agus chun soiléiriú a dhéanamh ar na comhpháirteanna bunriachtanacha ar cheart na marcálacha a ghreamú díobh, ba cheart rialacha comhchoiteanna Aontais maidir leis an marcáil a thabhairt isteach.