Use the View command to switch the view of the ledger to one which has a different set of columns. The Ledger, Debit, Credit, Open, Closed and Opening Balance views all share the same set of columns, filtering the data to reflect the active view. So instead, choose a view that changes the column set. For example, if your ledger view is set to display amounts only, you can switch to any of the following views: Quantities Only, Quantities Only – Dr/Cr Split, Amounts Only – Dr/Cr Split, Quantities & Amounts, Quantities & Amounts – Dr/Cr Split, Aging 30-60-90, Aging 7-14-21.
Note: If you are trying to restore a column on a journal view set to display amounts only, you can switch to any of the following views: Quantities & Amounts, Unit of Measure, Units of Measure & Inventory, Order/Ship/Backorder Quantities, Units of Measure & Order/Ship/Backorder.
After changing the view to a different column set, change it back to the view you were on when the column was deleted. You will find that the missing column has automatically been restored.