The Auto Fill option for CST is available in the Form Issuable/ Form Receivable screen. This option is used to filter the Forms Type and to fill up the form number for a group of vouchers.
Go to Gateway of Tally > Display > Statutory Reports > CST > Form Receivable/ Form Issuable
Press Alt + S or click on Set Form No. Button in the buttons bar to enter the Form Series Number, Form Number and Form Date
Press F5: Auto Fill – CST to view Set Form Number screen.
In the Set Form Numbers screen, select the Form from Form Types
Enter the Form Series Number, Form Number and Form Date for the group of vouchers and press Enter to accept the configuration
Form Series Number, Form Number and Form Date are captured and displayed in the report
Press Enter to accept and save.