Provision should be made for refund certificates issued by Member States to be valid throughout the Union and for their issuing to be subject to the lodging of a security guaranteeing that the operator will apply for refunds.
Ba cheart foráil a dhéanamh maidir le deimhnithe aisíocaíochta arna n-eisiúint ag na Ballstáit, le go mbeidh siad bailí ar fud an Aontais agus maidir lena n-eisiúint a bheith faoi réir urrús a thaisceadh lena ráthaítear go gcuirfidh an t-oibreoir iarratas isteach ar aisíocaíochtaí.