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Open the report Income and Expense (Operational) from Accounting > Reports of Accounting
Go to More action > Change report variant > Add a new expression field
Go to user fields > click on Add option > New expression field
In the new dialog box, add the desired title. Then, in the detailed records expressions section, input the formula:
[Income Amount Turnover]−[Expense Amount Turnover]
Click on OK to save the formula.
Go to fields tab, add the User-defined field to the selected field section as shown below-
Double-click on the Income/Expense item from the upper pane. Then, add the user-defined field to the right side of the dialog box i.e. in Edit Grouping Field.
The document will display the Income and Expenses in a single column, as illustrated below.
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