Anyone have an idea about why our HMRC credentials are being rejected by QuickBooks?
QuickBooks isn't letting us file our VAT return. It keeps giving an error message of
"Authentication Failure. The supplier user credentials failed validation for the requested service."
However, when we loging to the HMRC website directly, the same credentials allow us to login.
Would like to get this matter resolved in time for the next VAT return.
Any help/advice gratefully received. Thanks.