Is the Agent Services Account Number 4 letters followed by 7 numbers please

To ensure you have accurate confirmation of your Agent Services Account details, it is best to contact HMRC directly. They can verify your account information and ensure you are using the correct formatting when connecting to QuickBooks.
 

When helping with the Making Tax Digital setup, you can refer to our QuickBooks MTD FAQs. This article explains how the Agent Services Account works within QuickBooks Online to authorize submissions.
 

If you have additional questions or concerns, you can leave a comment below.