Acceptance of a transmission does not necessarily indicate acceptance of an invoice
within the transmission. When received, invoices are normally validated against the
original order or contract. An invalid invoice in the transmission may result in the invoice
being rejected. Where corrections of an invoice results in rejection of the invoice, a credit
note must be transmitted by the sender followed by a re-issue of the corrected invoice,
etc. in a subsequent transmission.

Required action for EDI tradefast user

The eircom net EDI tradefast service is designed with the appropriate functionality to
allow users convert an existing stored invoice into a credit note.

When the user of the eircom net EDI tradefast service transmits a credit note to a
trading partner they must print a copy of the transmitted credit note showing the Tax
control message and the unique sequential number. This document should be attached
to the users internal document and stored by them in a way that complies with the Regulation.