To create stock item with alternate unit of measurement, you have to enable the alternate unit field in stock item master creation screen.
To enable alternate unit of measurement
1. Go to Gateway of Tally > F12: Configure > Accts / Inventory Info.
2. Set the option Use alternate units for stock items? to Yes as shown below:
3. Press Ctrl+A to accept.
Or
1. Go to Gateway of Tally > Inventory Info. > Stock Items > Create.
2. Click F12: Configure.
3. Set the option Use alternate units for stock items? to Yes.
4. Press Ctrl+A to accept.