Steps to Enable Activate TDL in Tally
To enable Free Feature Extension TDLs in Tally.ERP 9, follow the below steps:
1. Download and extract the common TDL Library File TSPL FFE Common
Library.zip and attach the file TSPL FFE Common Library.tdl with Tally.ERP 9
(following any of the below procedures), without which some of the free feature
extension TDLs will not work. It contains commonly used definitions and System
Formulae in the TDLs.
2. Download and extract the respective zip files for each TDL in your local system, say,
C:\Tally.ERP9
3. Attach the main TDL File (File Name specified in the respective user manuals) from
the unzipped folder with Tally.ERP 9. Any one of the below methods can be used to
attach the downloaded TDL Files with Tally.ERP 9.

Activate TDL in Tally Step 1 – 

Upload the main TDL file as Account TDLs
Tally.ERP 9 users can upload the customized TDL programs from the
Web Control Centre. To achieve this facility, user need to create a
configuration pack and deploy it across sites belonging to an account.
Uploading the customised TDL program files is simple and easy task and
the updates are dynamic. Please refer CBD for Account TDLs for more
details.
OR

Activate TDL in Tally Step 2 –

Attach the main TDL in Tally.ERP 9. Now user can attach TDLs in
Tally.ERP 9 using the following ways.
• Using Tally.ini
i. Open Tally.ERP 9 folder, for e.g., C:\Tally.ERP9
ii. Open Tally.ini file
iii. Ensure that the option User TDL =Yes
iv. Include TDL filename with directory path and save
OR
• Using F12 Configuration
i. From Gateway of Tally menu Select F12:Configure
ii. Select the menu item TDL Configuration
iii. Click F4:Local TDLs on button bar
iv. Add the file name with directory path
4. Execute Tally.ERP 9

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