Please note that the modification of a record 281 can only be done by the person (= user/sender) with whose data the original consignment was submitted.
Via www.belcotaxonweb.be and 'publications', the demo 'HELP Adding, cancelling and modifying fiches online' is available and shows this procedure step by step.
If this person no longer works for the company or if another person has been appointed to manage the data, a signed request for modification of the user can be sent as an attachment to an e-mail to firstname.lastname@example.org or by fax to 0257/99234 or by post. In this request you mention the reference number of the shipment(s), the KBO number of the sender and the national register number of the current (= previous) user and that of the new user.
This information and the necessary 'user change form' can be found at www.belcotaxonweb.be via 'FAQ', 'Submit forms - General' and 'Who is allowed to consult or change the data?