Tally.Developer 9 is a comprehensive development Suit designed specifically for programming in TDL (Tally Definition Language). It delivers a host of capabilities and integrated tools to provide an extremely rapid development environment. Ã¢â‚¬Â¢ Refer to the Getting Started guide before you begin Installation. Ã¢â‚¬Â¢ You can use the same Administrator Email id which you currently use for Tally.ERP 9. In that case Tally.Developer 9 will be activated as a site under the same Account. Ã¢â‚¬Â¢ Tally.Developer 9 is supported under the MultiProduct Licensing Framework . The License server which is used to serve Tally.ERP 9 license can be used for Tally.Developer 9 as well.