Remove Coupon Code from invoice

Question

I want to remove the coupon code from magento invoice.

essentially the second row must look like

Discount : -Rs374.90

Any help would be highly appreciated

Answer 1

You can rewrite the method _initTotals from the block Mage_Adminhtml_Block_Sales_Order_Invoice_Totals and make it look like this:

protected function _initTotals()
{
    $this->getSource()->setDiscountDescription('');
    return parent::_initTotals();
}