: Code is typically saved as .txt or .tdl files. For distribution, these can be compiled into protected .tcp (Tally Compliant Product) files. TDL Components - TallyHelp
Tally Definition Language (TDL) is the scripting and customization language used to extend and tailor Tally.ERP 9 beyond its out‑of‑the‑box capabilities. For accountants, developers, and business owners who rely on Tally.ERP 9, TDL unlocks automation, custom reports, tailored screens and business logic—helping adapt the product to industry‑specific workflows without replacing the core accounting engine. tdl for tally erp 9