https://help.tallysolutions.com/docs/te9rel64/Maintaining_Company_Data/F12_Config/F12_Configurations.htm

F12 Configuration Menu

F12 configurations are application centric configurations that are present across all screens of Tally.ERP 9. These configuration can be changed and managed any number of times to suit changing needs. For example, if you want to record your purchase transactions in debit/credit mode, the same can be set in the F12 configurations.

Configuration options, affect all the companies maintained in the same Tally.ERP 9 directory and setting the configuration for one company will affect the configuration of other companies in that particular data directory.

To know more, click the links below:

General

Numeric Symbols

Accounts/Inventory Info.

Voucher Entry

Invoice/Orders Entry

Payroll Configuration

Banking Configuration

Printing

E-Mailing

Data Configuration

Advanced Configuration

Product & Features

Licensing