You can alter the units of measurement created in Tally.ERP 9.
To alter Units of measurement
1. Go to Gateway of Tally > Inventory Info. > Units of Measure > Alter.
2. Select the Name of Unit you want to alter from the Units list. The Unit Alteration screen appears as shown below:
3. Make the necessary changes.
4. Press Ctrl+A to accept.
You can delete a unit of measure by pressing Alt+D. However, a unit of measure that is part of a compound measure cannot be deleted without deleting the compound measure first.