Retrospective amendment of the customs declarant

It often happens that customs declarations are incorrectly filled out. Such errors are not necessarily intentional and are often nothing more than carelessness. The question in such cases is whether it is possible to amend the customs declaration retrospectively and how. Whereas it is accepted it is possible to go back and correct particulars about the goods and their value, the customs administration has generally not allowed the customs declarant to be amended in this way. Among the reasons cited is that the relevant court judgements have also rejected such an amendment. We now have two recent judgements which deal with this question of the retrospective amendment of the customs declarant. How helpful are these judgements in practice?