To update the units in bulk for multiple items, you need to follow the below steps:
Step 1: Go to Administration, then select Bulk Updations, then select Multiple Item Creation or Modification.
Step 2: then select modify exiting master, then click on select fileds, and select the unit filed in the selected field.
Step 3: then click on Load Master. After Load Master, you can change the unit in bulk for all the items, then click on Save to save the details.
Step 4: Then it will update the unit in bulk.