Making Tax Digital (MTD) - VAT Number

Before you send your first final VAT return via MTD API, you must ensure that the VAT number (VRN) is correctly defined in the Company data settings. Go to System ➔ General ➔ Settings ➔ Company data settings. In the VAT number field you must ensure that a purely numeric VAT number has been entered without any spaces. For example, if your VAT number is GB999 9999 73, it should be entered as 999999973 in the VAT number field.