Tally’s Default
In tally, security control is available for restrict or disallow for voucher entry on back dated vouchers. This control disallows the back dated entry for all type of vouchers based on entry passed last date on any particular voucher type.

Uses of this TDL
Using this tdl, additional security control available, where in each and every voucher type has different type of last date of entry, which can be controlled individual voucher type, instead of common date control.

This control can be enabled to do backed entry thru Voucher Type Level or User Level.