From October 2023, HMRC will be removing the functionality to copy across agent authorisation for VAT from the online services for agents account to the agent services account (ASA).
After this change, the only way for agents to become authorised and gain access to digital services for VAT will be to use the authorisation service available in the ASA. This involves sending a link to the client that they need to accept.
The ASA authorisation service should be used for all new VAT clients.
Source: ICAEW
