The tax category I created is not showing in my older entries. What should I do to update it?
You can update the tax category in the older entries from below steps.
Step 1: You have to open the voucher in the modify mode.
Step 2: Then put the cursor in the item master and press ALT+M shortcut key then item will get open and update the new tax category.
Step 3: Re enter the item again in the voucher then tax will show as per the updated tax category.