T9 transactions are outside the scope of VAT and therefore do not report into the VAT return. Consequently, the posting of T9 transactions onto accounts 2200 and 2201 leads to the accumulation of differences between the VAT returns and the nominal ledger balances. As a result time is wasted identifying and correcting the transactions.
It should not be hardwired to these nominal numbers but based on the defined VAT control accounts. (It would cause us issues if it was hardwired to those nominal codes as we have an extremely non-standard set of nominal codes numbers.)