Why is my invoice printing in two copies instead of one original copy?
If you Want to print invoice only original copy:-
1.Go to the Administration Select Configuration Then click on Voucher Series Configuration.
2.Then Select Voucher Type Then Series i.e If want To set In sales Invoice Click on sales then Select Series.
3.Then Click on Voucher Configuration Then Click on Configuration in Print Sales Invoice After Saving.
4.Then Press 'N' On Specify Default No. of Copies. Then Save The Configuration & Page.