Hello G_dely, Thanks for reaching out to the Community:smiling_face_with_smiling_eyes: You can not submit a supplementary return with the same dates however you can if you want to delete the last return by going to the supplier centre >find the VAT agency>you will see the transactions on the right>select and open the latest journal entry, that should be the latest filing. At the top of the window if you can select delete. It will then remove the last filing and allow it to be refiled. We have to stress this would be a combined vat filing and not a supplementary one for that. We would ask you to before you do anything do a back-up of the desktop file and if you are concerned about doing any of that by yourself please call in to our desktop support on 08081689535.