I started up in December 2023 and immediately incurred a cost of €5,000 for a year-long training course in 2024. The invoice states 2023. I have now entered everything in Dextter, but I get an error message when I upload the file to InterVAT. It says, “The taxpayer’s tax regime does not allow him to submit a periodic vAT declaration.” How can I solve this? I do not necessarily want to be paid back for the vAT immediately, but I would prefer to retain the right to that refund.