Division by zero error Sales Order Invoice Postings

Recently, came across an issue with the customer where they were getting an error as below everytime generating an invoice for the sales orders. { Division by zero. - (S)\Classes\SalesInvoiceDP\insertIntoSalesInvoiceTmp - line 123 }

I discovered there was an unhandled exception in the line of code for \classes\SalesInvoiceDP\insertIntoSalesInvoiceTmp method on a certain line of code as below

Line 122 of the method states

salesInvoiceTmp.SalesPrice =   _custInvoiceTrans.SalesPrice / (_custInvoiceTrans.LineAmount +_custInvoiceTrans.LineAmountTax) * _custInvoiceTrans.LineAmount;

Changing that line of code to below resolves the issue

// changes made to avoid division by zero error.
if((_custInvoiceTrans.LineAmount +_custInvoiceTrans.LineAmountTax) * _custInvoiceTrans.LineAmount == 0)
     salesInvoiceTmp.SalesPrice = 0 ;
else
     salesInvoiceTmp.SalesPrice =   _custInvoiceTrans.SalesPrice / (_custInvoiceTrans.LineAmount +_custInvoiceTrans.LineAmountTax) * _custInvoiceTrans.LineAmount;