Clients using an offline version of the company file i.e the file is stored in their local library or a network library, are not required to upgrade to a later version of the product. Clients working on online files on AccountRight 2019.2 and 2019.3 versions are required upgrade before 10th February - see AccountRight 2019.2 and 2019.3 Scheduled decommissioning for more information.
Although, in saying that, clients on AccountRight 2019.2 and 2019.3 versions that do work offline are encouraged to upgrade to the latest version. This is to ensure that they are making the best use out of their AccountRight Subscriptions and gaining access to the new features and known issue fixes. Note: this is not a requirement, clients working on offline files can continue to work on offline files with older versions.